period problems

Okay so I went to my boyfriends hotel room where he was rooming with five of his other guy friends and I sit on his bed and just play on my phone and then once I get up there is a freaking blood stain and my little sister screams at the top of her lungs that there's a stain. So I leave and change my stuff and my boyfriend texts me that the other guys are making fun of me. Sadly I was too embarrassed to go back up and spend time with them anymore. Also I have to hangout with all of them tomorrow and I just don't want to. 😭😭😭