Suggest Remedy To Improve Immunity, Memory And To Regularize Periods

I am suffering from thyroid problem and taking medicin called tyronom 50 mg suggested by my Doctor. now the report came normal. TSH is 2.9.

but my immunity is very week. i get tired very soon, i forget things fast, my hight is 5"4' and weight is 66.5 kg though i avoid eating juncks.i am taking milk, fruits, juice daily. i eat normal veg food like bread, rice, vegetables. also my mencural cycle is not regular from last 3-4 months. i got married two years back and i am 33 yrs old. please suggest me how to recover from my problems. i want to try for baby and i want to have normal delivery too.