Me and my boyfriend have had sex multiple times this month. One being on the 27% day, he has not cum inside me at all but once, and he wore a condom everytime. As we know it hasn't broke anytime. Glow says im supposed to get my period today but my other app says on Monday. I am normally 28 days which is tomorrow, I heard a bloody nose is an early pregnancy sign and i had one today and yesterday, but i get bloody noses a lot so I don't know if it's just a coincidence or not. Should i be worried or probably nothing ?