Talk to Gastroenterologist on Stomach Issue + Hormones

Assalam o alaikum! Meri age 25 hai. Mera baby 2.5 years ka h. Baby ki delivery k 1 saal bad periods dubara start huwy thy. Tb sy sirf 1.5 din bleeding proper rehti h uski bd just spotting hoti h .6 days ka cycle hota h Baby 3 months ka tha jb husband abroad chly gay thy . 7 months pahly ay thy tb mera weight b gain ho gya tha,period cycle b disturb ho gya tha 3 days early ho gya tha Ab 2 to 3 days delay ho jata h or many concieve b nhi kia.Before and after pregnancy my weight is stuck on 47 1.5 saal bchy ko breastfeeding krwai h .tb b weight bht kam ho gya tha6 7 month phly weight fluctuate ho rha tha 63 66 69 Now I'm on 57 Currently I'm having stomach and gastric issue Heartburn, burps, acidity, white tongue.