Gas, bloating. Am feeling the same?

I am 21 years old,last year in november for the first time i experiencd some bowel abnormalities and excess of bloating and constant gas coming out as burps. I havent been eating quite well since an year and half until november and was working out more.Then i started to have full tummy meals from october.I felt maybe my intestines couldnt get adjusted to the sudden variation in the amount of food i ate and with a little decreased work out sessions as well.I showed myself to a physician and she said its not any problem maybe the bloating is related to my oestrogen phase of menstrual cycle. Since then i havent had best of bowel cycles. Every other day its diarrhoea even if i ate no outside food n i hear some tinkling sounds after i take a meal.The bloating and gas however subsided after a month.But i feel my stool has a little bit of variation from what i usually had.no blood or mucus in it,no colour change,but i feel it a little more slimy kind,no pain.Today i again am feeling the same