TSH result and starting IVF

[luthien]

Just had my most recent thyroid blood test at my GP (16th April)

Serum TSH level 3.7 miu/L [0.2 - 5.5] - no action required - stay on same medication dose

For reference

1st Dec (2020) - Serum TSH level 14.2 miu/L [0.2 - 5.5]Above high reference limit

16th Feb - Started on 50mcg of Levothyroxine - delayed due to mix up at GP and pharmacy

19th Feb - Serum TSH level 7.7 miu/L [0.2 - 5.5] Above high reference limit

19th Feb - Serum thyroid peroxidase antibody concentration 358 iu/mL [0.0 - 25.0] Above high reference limit

Stayed on 50mcg Levothyroxine

The GP doesn't seem bothered about my TSH level but the letter from my fertility specialist (to my GP) says it needs to be below 2.5 to start IVF, so what do I do now? I need a dose adjustment (and of course a repeat test to start IVF but the GP just says it's in the normal range.