Sort of TMI, but what is going on with my sex drive?

I've always had a low, to moderate sex drive. AF started on January 20th and stopped yesterday, but since my period started my sex drive is the HIGHEST I've ever had in my entire life. Every day since the 20th it's been through the roof. I'm having sex daily with my hubby and masturbating sometimes 3 times a day. I even just have a huge urge to give oral to my hubby. I feel crazy because this is completely new to me. Is there anything physically that could be causing this?