Hormonal Birth Control, in its many forms, seems to have a normal side effect of decreased libido/etc. Really, there's not a lot you can do about it.
I know in my case, wifey was on HBC for years (minus planned pregnancies of course) - and her sex-drive was in the toilet. Frustrated the hell out of me.
Since our last child though, I got snipped & she got off the hormones - now she's a lean mean fucking machine. I can barely keep up
Bet way to stop the side effects of HBC is to stop taking them....which of course then has you looking at another method of birth control. Good luck
Sammy