It's on a fold too, so eventually it will blend in, once the pigmentation vanishes. I've been using silicone scar treatment on it since a little bit after the stitches were removed. I've used a couple different products. A silicon scar stick and silicon gel, both from Amazon. The scar stick was most convenient, but it got weird and fell apart near the end of it. It lasted me about two months. And, of course, if it's a sunny day, I put Burts bees spf 70 sunblock on it, the the scar gel.
Don't worry about little coughs. Big one's, like, dry heaving, would probably be an issue. Lol Only worry about what you can control.

Same advice Haben gave me. FYI : I actually talked a little on the second day. It was weird. I left my cords relaxedm and simply breathed out kind hard from my stomach and formed words with my mouth. I said very little... It was when my bff missed our exit. Lol But still, it's an example of a slight bending of the rules and I turned out fine.