burning??

so i started this new BC pill and idk if this has anything to do with it but i’ve been feeling a burning feeling and a hurting pain when i was on my period. i’m now off of it and tried to have sex with my husband and it just felt like a burning pain. it doesn’t really hurt when i pee and i’m completely fine other than what happened last night. i have no idea what this is,if anyone has any suggestions,please help.