FML 😔😔

So I'm 19 and my boyfriend is 20 we both love with our parents who are both strict Christians. We never get to go into each others rooms. The only time we have sex is when we're super sneaky. My parents have a wedding tonight and are going to be out of town for 2 days so I planned this huge night for us and cleaned everything. I was finally going to have him spend the night! Turns out my 30 year old sister and her two kids are going to be staying here... So I was like shit... Guess we can't do that anymore! Then a super good friend of mine invited my boyfriend and I to drive 2 hours to come stay in her and her finances house! I was so excited!!! And we were gonna have so much fun.... And then I just started my period. FML lol. I'm not against period sex but I don't wanna make a mess in our friends guest bed