I can't get enough sex??

I've usually had a pretty high sex drive but it goes up and down. Sometimes I want it really bad, sometimes just the thought of it repulses me. But the last about 4 days I can't get enough. Yesterday my fiance and I were both off work and we had sex 6 times. And I wanted more!! And the days before that it was at least 2 times a day. Hes not complaining, but he did say I'm wearing him out. Idk what's wrong with me. Even right now I can't stop thinking about attacking him when he gets home. Sorry if its tmi but I haven't been this horny since puberty! Idk how to feel about it.