Talk to Internal Medicine on Numbness And Insomnia

I am in 3month postpartum, baby is still in NiCU premature 32 week birth and few complications. Mujha nend ne ati aur jb laitu sone k liye to legs of left side numb ho jati jiski waja sa nend ne ati gabraht hoti, gp said pp anxiety ha Mirtazapine start krwae from 1 month i am using nend to ati med se but mid night ankh khul jati or ghbrat heart rate fast aur head hr waqt like vibration hoti rehti muscles pain stomach issue blurry vision, fatigue, nend lena k bd be body weakness feel hoti kuch be khao belching buat hoti cheat throat kabhi sir main pain hpti aik side kabhi dono side head pressure feel hota. even med use krna se be better feel nw ho raha, body left side numb kiu ho jati. cbc, Ecg krwae dono normal. vitamin d deficiency me vit d aur B12 dono le re abhi, stomach k liye pantoprazole. what could be the reason things are not getting better and body left side numbness kiu ho jati raat ko