Recently I have started my period after not having one for five months. I went to my doctor and she told me that I was not having my period because of stress. Now I have been on my period for three weeks. It stopped after two weeks and my husband and I had sex, which made it start again the next day. Then it stopped again after 4 four days. My husband and I had sex again and it started up again. Help! What is wrong with me?