Period issue. Imbalance. please advise!

I had a irregular period issue in past. However from last 1 yr my periods are continuous but it's come only for 1 or 2 days. Last month i have visited endocrinology for thyroid issue and we found my THS is 4.62 which has decrease but antibody tyriod result was positive. Also pre diabetes has been detected which is 5.7.. Hence my doctor increases my doses from 12.5 mg to 25mg.. Also I got neck strain last month due to which I was on medication for at last 10 days.. I think due to medications I missed my period last month.. I waited but now it's mid Feb n still no sign of period. I m not able to understand actual reason. It's bcoz of changes in doses or having multiple medications at a tym or due to hormones imbalance. Please advise