Hormone issues?
Answers: It is not majority to start menopause anywhere near that age. Some of those symptoms such as no sex drive and sudden mood swings, could be cause by the contraceptive pill. Have you been checking your blood pressure? The pill can bring to the fore it in some women, and that would dispense you hot flushes and headaches. You should gossip to your doctor about it. If it is not the covering he might be able to do some blood test for hormone levels, to see if they are mundane or not.
Talk to who gave you the pill, you might want to switch to a lighter pill or try something else. i GOT THE shot (sorry) the depo shot and thought I be going crazy! Same symptoms as you but not as bad headache. Less sex drive. But REAL MOODY! Won't do that again! I was suppose to capture another shot 1/29, and I didn't now I still discern out of sorts.
Good luck!