My 15 year old daughter who was in perfect health received 2 doses of the covid vaccine. After the second dose her period became irregular and then non-existent. After a few months she went to the doctor and her Pituitary level was over 300  (should be 13-18) and her thyroid was below 4(should be 8-15) .Over a year later and numerous trips to doctors they are still trying to regulate her thyroid. I brought up the idea that perhaps the covid vaccine may have triggered this, and it was dismissed. I believe that the covid vaccine defiantly caused her current autoimmune disease.