6 Week Update (technically not for another 3 days, but hey)
Foreword: I totally wrote a reply to your questions Brett, but then my browser crashed
so I'm gonna do a full update instead At my hospital visit today I had swabs taken so not sure if I do have an actual infection yet. I saw a doctor who seems to think it's just fluid buildup - this confuses me, surely if it was fluid buildup it would be leaking....fluid xD not huge amounts of puss. My incisions were fully healed up, but I mentioned before that I had some pleats/ruffles/folds (never sure how to describe them) most of them flattened out nicely, the biggest one didn't, it still hasn't, that's where the original leaking was coming from. My theory is that it was just too big to flatten, so it opened up and gradually got bigger and more irritated letting in all kinds of germs....culminating in a gross puss explosion

I now have at least three holes in the same area, sort of awkward to see. Before I squeezed it I had like, puss blisters? Not sure what you'd call them, big white lumps along the incision line; I squeezed - they all exploded - leaving behind quite a few holes. This was probably a mistake - if I had let the nurse do it she probably would have made a small cut and drained it properly. It was a huge relief at the time though, it got like 10 times worse than when I last posted about it but then felt instantly better once it was empty. Learn from my mistake

call up straight away if you have any concerns, I'm one of those who won't go to the doctor unless absolutely necessary, if I had got antibiotics straight away this might not have happened, but hey ho! Hindsight is always 20/20
That being said though - doctors in England are super stingy with antibiotics, so that they don't become ineffective. So if I had called sooner, they might not have given them to me anyway, the nurse was still cautious with handing them over today and called in two doctors and another nurse for their opinion on whether I needed them. So no, I wasn't given any antibiotics straight after surgery.
On the bright side, the other side of my chest is healing beautifully. My nipples are better than before surgery, responding to hot and cold and I have sensation, I didn't before - very interesting. Not sure if this a psychological thing - remove the dysphoria and the nerves spring into life

I went to uni last week, I managed the bus ok but I did have to go upstairs to get a seat and felt some pulling. I don't feel comfortable trying it with a bag yet. Other than the bus it was great! For starters I can get dressed in 5 minutes now, no messing about with binders and layers and "can you see my chest in this shirt?" - I was early for the first time ever.
I'm also cold for the first time ever! I usually went outside for a cigarette without a coat, even without a coat I was wearing at least three layers and always overheating xD I went out this time, in just a t-shirt, out of habits sake and oh boy it was cold. I have one mate in class who knows I'm trans and he laughed at the fact he could see my nipples through my shirt. He said it was weird how he didn't noticed that I never had nipples showing before

Also for clarification before disapproving - I switched to e-cigarettes a few months before surgery, my surgeon agreed this was acceptable

I still go outside, purely because everyone else does.
I'm back to being able to do most every day activities, housework, picking a few things up from the shop, playing with the kidlet, etc. I can't quite reach above my head properly, my shower nozzle and top kitchen cupboards are just out of reach...glad I have someone else here or I would be taunted by cheerios. I haven't tried vacuuming yet, or picking the little'un up. She totally understands though bless her. She randomly comes up and asks me "how's your poorly chest?" and if my partner is making a lot of noise she goes "shhhh! Daddy has a poorly chest and needs to rest!" xD
I was starting to consider working out again before this infection kicked in. I removed some of the weights from my dumbbells to make them light enough to manage, it doesn't really feel like it's doing anything productive but I'm sure it's better than nothing, I gotta build up slowly. I'm going to leave it for a few weeks now though.
Edit: Pictures! I swear my skin in general isn't this red in person, why do cameras do that?

The white dots on one of my nipples are the fishing line type sutures poking out. They have been like that for a while, not pushing out any further, I'm leaving them alone.

Y'know, it's a good job I'm not fussed about cosmetics, my chest is quite a mess isn't it?

poofy bits on the inside and outside edges, incisions widening, asymmetry, stretchmarks, infection xD I genuinely don't care though, looks perfect under clothes and certainly looks and feels about a billion percent better than it did before surgery.
And the infected bit in case anyone needs a frame of reference in the future for what to look for. That red circle is where all the swelling was. It was like a golf ball =/ You can also see the fold that started it all.
http://i1130.photobucket.com/albums/m528/Jeatyn/WP_001222_zpsb1527b9c.jpg