TSH levels fluctuating

Denise
Hi there
Ive been TTC for almost a year now. Just recently, I  found out myself that  my TSH levels are fluctuating. 
Sept - 3.19
Nov - 3.39
Dec-   2.15
Feb- 2.45
I know you cannot get pregnant when your levels are higher than 2.
Any advice or help is greatly appreciated. 
Started taking thyro smart supplements last week. 
My RP said she cannot give me any medication bec my levels are within normal range.