This is probably a serious case of overthinking, but here we go:
My boyfriend and I have sex fairly regularly, a few time a week usually, but we always use a condom from start to finish. We were also not active on my projected date of ovulation, though we were two days after. We've never had a condom break, nor exhibit any signs of leaking. My period was due a week ago and have yet to get any symptoms of either pregnancy or period. The only sign either way is I have been very tired, but as I'm naturally prone to iron deficiency I didn't think this anything new.
I have been traveling more frequently, and have had a bit more stress than usual with holidays and in personal life (and obviously from this). I took two HPT today, both Clear Blue Brand, one in the morning after purchase and one this afternoon, and both showed negative.
As I said, this is probably an overthinking, but is there a possibility of pregnancy?