Possible ovulation?

I had open surgery for an ectopic 2 1/2 weeks ago. Most of the internal pain is gone, just incision pain now. I've probably been doing too much, lifting too much, etc. but I've been pretty sore the last two days. This  evening I've been having aching pain on my bad side constantly like ovulating pain. I had an HCG blood test Friday but haven't gotten the results yet. I know we can't have sex yet but could I already be ovulating again? Maybe if I am this means AF will be here in about 2 weeks? Then I'll ovulate on my good side next month! (Hopefully). I thought about buying an OPK test just out of curiosity but they're so expensive! I guess long story short, could I ovulate this soon after an ectopic and before AF?