why do i smell ?

Miaa

okay so for about a week now i’ve had a strange smell. no discharge or itching just a smell. no i did have unprotected sex a week ago and that’s what started it i think. it’s been a week since then tho and now it’s not as strong but i can still smell it a little. it’s like a period smell kind of not fishy or anything. and my boyfriend wants to do it again but i’m embarrassed about my smell idk if it’s something serious HELP !!!