first off, seek professional help, just to be sure it's nothing medically wrong.
curses grow stronger the more energy we feed into them. i'm not saying you were or weren't cursed, but if you keep worrying about it, chances are you are subconsciously making things worse for yourself out of fear/worry.
this does sound like a curse though, cleanse and protect everything, start by having a cleansing bath, then cleanse your whole house. after cleansing your house, make and hang a protection charm in each room, and carry/wear one everywhere you go. finally, try casting a reversal spell to protect you in case someone did curse you. after all this, just put it behind you, while you might feel some bits of negativity still lingering, worrying will make it stronger, so don't think about it. you should also get into a habit of shielding daily, and you might have to purify your house fairly regularly for the first little while to be certain everythings gone. the protection spell [depending on what one you cast really] for me lasts about 6-8 weeks, so you might also want to recast or rebless them every full moon.
granted, if all that fails, and the tests comes back negative, you might have to consider moving. however, i doubt it will come to that, but it's a possibility. just speak with your doctor, hopefully he can diagnose something, then go home and cleanse/protect everything and everyone in the home. good luck.