Decreased Sex Drive

Molly
My boyfriend and I have always had a very healthy sexual relationship. (Sex 2-4 times a day) Over the past month however, my sex drive has been practically zero. (For some background, I am on the Camilla tablet and we don't use condoms.) We have a very healthy relationship without the sex, and my life is not particularly stressful. I can't figure out why my sex drive has been so low. I want to please him, but I am not going to have sex if my body isn't in to it. 
Anybody have any thoughts or suggestions?