I don’t know what’s wrong with me

I haven't had sex in four months and for the longest time, I was fine with it and I wasn't really ready to get really intimate with anyone after my breakup. I was FINE until at the end of January I started to get really really horny. I'm cranky all the time and tense. My friends say that it's hormonal but it's been two or three weeks feeling like this. I don't know what's wrong :/