Spotting 1 week after BD?? Help!

TTC baby #3 naturally (I have PCOS and used clomid for baby 2), meaning I haven’t tracked using OPKs yet. I’ve been spotting light/dark brown discharge since the 27th, no red or flow.

Today I had a 10 minute pain in my ovaries followed by nausea and low appetite.

Can this be a good sign to test soon? Or does this sound alarming?

Note to add, I am not on birth control nor have I been.