Help!!

I don’t know if I am dealing with just too many hormones due to taking plan b and birth control. I did that about two weeks ago. My back is killing me and my stomach muscles hurt like crazy. I have this weird white discharge that doesn’t smell or anything. But I am freaking out. Could this be my kidneys?? Or could I be pregnant?? My boobs don’t hurt or anything and I haven’t had any spotting. Idk if I’m sick or pregnant or what?! I have been having issues with burning while urinating on occasion. I just need some advice. Please help.