Thyroid related. What should i do?

Female 31 years old, Married, Mother of 3 years old child, C-section Done No medicial issue till now Not taking any kind if medicine Bp is generally Low (120-70) Sugar fasting-97-98 Height-5 feet Current weight- 55.5 During pregnancy, no BP no sugar , no thyroid detected Periods normal ( generally comes before 7-5 days before the last periods date) Routine test done in the month of jan TSH level -4.350 Again i go for test in the month of march and TSH level is-4.590 I attached report with your reference I just want to know do i have thyroid? Is mediation required or it will heal by own through following healthy life style, Note: i am taking too much stress on everything,overthinking etc. I did-not take any medicine of thyroid what should i do? Please answer here only Thanks in advance .