Should I be concerned? TMI?

Alissa • Expecting baby #1 in December and we couldn't be any more excited!♡
My peak fertility day was Wednesday, and my fiancé and I did the BD multiple times leading up to that. This morning, when I went to the bathroom I noticed some blood. I just had my period around a week ago and it was normal. The blood wasn't brown it was red and my stomach kinda hurts this morning..should I be concerned?