Bad smelly menstrual period for almost a month.

Here's the thing. I didn't have my period for about 4-5 months, then last month I finally got my period. The weird thing is, my husband and I had sexual intercourse then later on that day I started spotting a little, then a few days later I started bleeding(I believe my menstrual cycle has finally started after all these months). But the thing is I've had my menstrual period since last month of January and it's still going on. It doesn't seem to be light at all. It's always changing between moderate and heavy. But it also smells really really bad. I'm not sure what to do. Last year I went to see my doctor and told her about my menstrual cycle not being regular, she didn't help me much. She just told me that it's possible my weight makes my menstrual cycle irregular. Someone help please. Thanks in advance.