Talk to Gynecologist on Pcos Weight Gain

i am having pcos from almost 6 7 years i have got different treatments from different doctors to treat it and from last 2 years i am finaly having regular periods. 1 year ago i got married i gain weight from 62 kg to now 73kg i am trying to lose it.but nothing helped if i do regular exercise and walk it stucks to its point if i stop walk its increase 2 3kg i have changed my eatng habits little bit too. i am ttc so my gyne tried different medicine to lose wait. but its stucked where it is plz help me as i cant afford an endocrinologist or nutritionist. i realy want to lose weight and get preg soon. :(