I hav pnd wil i ever b the person i was before i had my baby?

i am the biggest ***** 2 my partner,it got so bad that he left me the night before our wedding..i stil love him but feel so angry towards hm and i dont knw y..i am on meds 4 my depression bt they are nt helping..and my doc wont try me on somethng else.i jst want 2 b the happy person i was when i met my partner.wil that ever hapen?