Hey guys I'm 18 I've had my period since I was 12 and it's always been normal up until January now I'm 3 months late all pregnancy test are negative I went to the OB he did blood work a week ago and said my thyroid had came back abnormal he wanted me to come back and fast before my 2nd blood work well I did and got my results today and everything came back normal so I'm not sure what to think he made me another appointment and said he wants to look deeper into it has anyone experienced this? What do you guys think?