Drink until it's pink?

My DH and I are going on a trip this weekend for a wedding, all of his work friends will be there including his boss. I'm one week before AF should come and I'm feeling like this is our month. I have sore nipples which I never have and increased cm and cramps. It's too early to test. I'm so anxious because I would rather not drink if I am pregnant but what am I supposed to say to his coworkers all weekend? Some know we are ttc and I would for people to know so early on in case I mc.. Also I would hate to not enjoy myself if AF does come.. What would you do?