It’s a second month that my period has been coming after 35 days. Idk why. I don’t think I’ve been stressed out lately. Also I eat healthy and been getting myself back on track with exercising. That just started this week. My calendar on the app says I haven’t gotten my period in 38 days. How can this be?! I took a pregnancy test and it was negative. I’m so concerned. I’m afraid that my cycle is messed up and gunna have trouble getting pregnant. Is this a Thyroid problem? Please advise would be great.