i had sex with my bf, and after that i had periods in form of spotting for 15 days. i also feeling like some disturbance of my stomach .. i tried to have regular and healthy food.. i happen with me last year also with the same month but i was not pregnant.. i have normal cycle of 2 months always... now my abdomen is also looks out .. is it normal to have irregular periods and other side effect(abdomen out),disturbance of stomach,stress etc) or should i go to doctor...