lots of blood

Kyrstiana • Married to the love of my life for one year. 22 years old. Currently TTC!
I'm hardcore freaking out right now. I did an OPK this morning and it said I had high fertility, so my husband and I did the BD, when we finished there was no white juices, just RED! I'm really concerned. We don't have STIs, I'm not supposed to be on my period, but they are very irregular so I can never tell. I did just get my IUD removed on Wednesday. The only issues I have is endometriosis, but I've never bleed during BD before. Should I be concerned?