last resort..... THYROID DISEASE????

Sierra
For last last year or so I've been feeling really sick. Whenever I get my period I'm in so much pain I can't move and I get so nauseous I puke. It's gotten really bad even when I'm not on my period. My cycle has also been really messed up and irregular which isn't normal for me at all. And when I do get it, it's really heavy.  I've also had an ear ache and a constant headache for last last couple of weeks and I just don't know what's wrong. I've gone to the doctor a couple of times and every time they take blood and I hear nothing back from them. On my grandmas side all 8 of the female siblings have thyroid disease so I think it might be this. I honestly have no clue though and the doctors aren't helping. Anyone else feeling the same way or know what's up? Also if you have thyroid disease is this what you feel like and what will the doctors do for me?