bloated and tired of it

Hi, i've been feeling bloated for over 2 weeks now and it's driving me insane. Every time i eat a little little something i feel like i just ate a cow and my stomach get's extremely bloated, i have a hard time sitting down and standing properly because of the discomfort. I did go see my doctor he has prescribed me medication that i have to take for a month, it's for ulcers and acid reflex. Every time i eat my stomach either really hurts or makes all sorts of noises. I do go to the washroom normally. I barely get hungry and when i do i can barely eat. In February i went to punta cana for a week, when i came back i had to go to the washroom almost every 5 mins after about 2 weeks of that i had horrible constipation my doctor did prescribe me medication and it passed. Now a month later after that fixed it self, i have a different problem of which i mentioned at the beginning. I was reading on one of the topics that was posted and in the answer it said that a symptom could be bleeding after sex, which i have experienced twice now, first time was severe bleeding it didn't last long but there was a lot of it and the second there was just a little bit of blood. On my last period it wasn't the same as every other period, it was more spotty and more brown than red...i would just like to know what's might be wrong with me