I had a miscarriage in 2013. In 2014 I found out i have an overactive thyroid. When i found out abput it i still had regular cycles up until July. My last LMP was june 27 and i lasted for 6 days as always. After that i have not seen my cycle in July and now August. I took 2 home test and they were negative. I went to the doctors and er and they did 1 at each place still negative. I had some signs but they have come and gone all buy sore breast, napping, and frequent trips to the bathroom. I have had the feeling my cyvle is comeing on but nothing. In july i did have spotting that lasted for 4 days but noyhing since. I have noy had a blood test done or anything please help.