What is wrong with me??

Lately I've been so unbelievably horny I feel as if I could literally gulp anything with a penis, but other than that I feel sick and have the worst acid reflux of my life. I can't seem to get and stay hydrated and I drink water/gateraid all the time. I'm so tired I can barely make it through the day without needing a nap (or three) and I'm so moody I can't hardly tolerate myself. I'm 35 days away from my next cycle and I don't know what's up. Anybody else tend to feel this way sometimes?