Pregnancy before wedding.

Hey there !
TMI WARNING.

In a bit of a dilemma. FH and I were doing our best to practice abstinence before our wedding on August 28, 2021 (SIXTEEN DAYS!) however, we ended up breaking that last Saturday the 6th. I was a few days away from ovulation, but FH did not use protection or pull out methods. Our wedding is coming up quick and I’m due for my period the Tuesday before our wedding… there is a possibility I could end up pregnant and miss my period. I’m a wreck. I’m not so much a wreck because we could be pregnant but because I will need to hide it from anyone and everyone so they aren’t suspicious since we would not be ready to make that announcement.
I have told my bridesmaid and BFF of like forever about the situation. Any other advice? Tips for if I am expecting? My dress was altered and I don’t think I would be too bloated… but any help for that if so? Thanks.