Dilemma

I have a bit of a dilemma and don’t know what to do, I have a bachelorette party on Saturday and by that time it will be 10 days since ovulating. Do I test early? It’s 5 days before my period is due. I’m just scared that if I get a BFN it will ruin the night. I also don’t want to take a chance on drinking if I’m pregnant. Thoughts?