periods & sex

Alright I'm facing a dilemma. so the 29th-5th I'm going on vacation with my man. I'll be on my period that week, and I'm on birth control pills. I bought a new lingerie set and I have been looking forward to this forever, but my period just snuck up on me. I like my period bc it lets me know I'm not pregnant, so I'm hesitant about skipping it like you can when ur on the pill. So my question is, what would you do? Just period sex? With or without the lingerie? Help :/