Super curious LOL

I’m really curious about this and seems very random.... but lol is it possible for your vagina to become tighter than usual? Last week me and my bf had sex and he said I felt extra tight, like the condom would kinda slip off as he pumped lol... since I was about to start my period I thought maybe that was why I was extra tight. But we had sex again the other day and I’m still super tight.... LOL. Could it be because I’ve been working again? I stand all day and walk around a lot. I work at Dillard’s in the Shoes department.