I RECEIVED MY PERIOD LAST MONTH AROUND THE FIRST TO

I RECEIVED MY PERIOD LAST MONTH AROUND THE FIRST TO THE SECOND WEEK. MY PERIOD LASTED FOR A GOOD WEEK OR SO. MY BLOOD WAS VERY BRIGHT RED THAN IT TURNED TO A BROWISH COLOR AFTER. SINCE MY PERIOD I DRANK AN ALCOHOL BEVERAGE, AFTER MY FIRST SLIPS I STARTED TO EXPERIENCE A PAINFUL PAIN IN MY TUMMY. i HAVE BEEN BLOATED, CONSTIPATED, AND CRAMPING FOR NEARLY 3 WEEKS OR SO. IM VERY CONSIDERED. I TOOKED THREE PREGNANCIES TEST AND THEY CAME OUT NEGATIVE. WHAT DO YOU THINK SEEMS TO BE THE PROBLEM ? NEED ANSWERS AND INSTANT RELIEF !