It's not certain to me if it's my back hurting or my kidneys. I have had a history of bladder infections and I just recently got a kidney ultrasound. It came out fine. But, I am having really bad back pain while taking the oral contraception, "LoEstrin". I'm also having mild head aches, nausea, diarrhea, loss of appetite and fatigue. Is all of this normal?

I've been on the pill since Sunday, July 12th.

And today is Wednesday, July 15th.