I had a wide excision but I felt this kind of frustration and worry.
I'd been told I'd have an afternoon surgery and 2 weeks of healing to expect. No big deal.
I ended up in the hospital for two days and pain for two months. I wore a bra to bed the entire time. 8 months on and it only hurts if I agitate it (accidentally sleep on it).
Everyone heals at different rates. You've had it checked on and everything seems fine. Take a beat to just let yourself heal. It's okay to go to your GP about these things too; see if the flushes are hormonal or something else, get some advice on managing the anxiety etc.
Unfortunately I've been struggling with hot flushes since chemo (like Nadi has) and there doesn't seem to be much we can do about them. The good news is that they aren't dangerous, just really annoying. (Here is the thread we've been talking about them in, some really good advice from the ladies here, :
Link)