I can't stop to thinking ..help!

Caitlin
Hubby and I have been TTC for 17 months, I finally got my bfp this morning, 6w1d. On August 6th our best friends got married and of course I was drinking! I would've been 5 weeks along, according to the calendar. I feel sooo horrible, I was due for my period that day. Is that going to be an issue? I know shouldn't have been drinking but I feel like absolute crap now😰