Low sex drive

Mimi

I havent been horny in about 2-3 weeks, and my boyfriend always is and i dont know whats causing me to have a low sex drive. I searched on google it says the causes could be because of the change of hormones (start my period on the 27th) but even then my sex drive was high, and also because of stress but im not stressed at all. Any suggestions on what it could be?