Hypo to hyper?

[Zhr1]

Hello. I’ve had an under active thyroid since my 2nd child was born, 13 years ago. In that time I’ve been on 125mg of Levothyroxine with no apparent changes required. However in recent years, I’ve been increasingly more anxious, unable to get restorative sleep, sleeping a lot! Weight gain, unable to lose weight, brain fog....you get the picture. I had a private thyroid test on 18th May, which suggested everything was in range but my antibodies were raised. TSH 0.91, free t3 4.25, free t4 18.4. Thyroglobulin antibodies 426, thyroid peroxidase 221. My GP wasn’t concerned. So I decided to have a well woman screen, taken 15th june. This included TSH which has decreased to 0.09(?overactive now), free t3 increased to 5.09, free thyroxine increased to 21.6. I’m slightly concerned by the decrease in TSH in such a short period time, is this something I should be pushing my GP to review??