I actually checked my journal for this because I only remembered one or two things.
My throat started getting tickly and scratchy a few days in. Three days in, my voice was giving me a little trouble on the high notes when I sang.
Three or four days in, I started feeling...well, interesting sensations downstairs. Twinges. I thought I smelled a little different down there, too, but I wasn't quite sure.
On the fifth day, I woke up so horny that I masturbated immediately and had a powerful urge to jump my therapist (that I remember; I didn't need to look it up). From then on, I was a raging sex perv.
Around the same time, I thought I might be picking up a bit of muscle in my biceps. After six days, I found that bicycling was easier (I have a stationary bike), and I exceeded the goal I usually had to struggle to make. A few days later, I had to increase the resistance because cycling had become altogether too easy.
On the eleventh day, my voice made a fairly dramatic shift (most people didn't notice, but my therapist and I could hear how different I sounded). Singing was weird by this point because I would suddenly get a temporary burst of a somewhat deeper voice, and my throat would vibrate at a different frequency.
I had a bit of downstairs growth by the fourteenth day.
So that was my first two weeks, anyway.
Congrats on starting. Do you plan to keep a vlog or a journal?