Hi, I am 43 years old. For the past two years, I have started going through fertility center to get pregnant. My problem is unexplained infertility. Mostly because of the eggs. I had one abortion at age 27 and one miscarriage at age 40. Finally, I decided to go through egg donation. In January of this year I took clomid to go through testing for the insurance. In February 7th, I had my period for seven days then I started very light spotting until February 23rd. Now, it is March 31st I have not had my period yet. I did do blood pregnancy test; it came negative. However, I feel not like myself. I am extremely tired, have cramps, experience nausea and fast heart beat. I have always been a healthy person with regular periods and with no heart problem all my life. Now, I am not sure if these symptoms are side effects of clomid that I took or they are simply pre-menopause symptoms. I am very concerned about my health. I will be seeing my primary care doctor tomorrow. ANY ADVICE WOULD BE APPRECIATED!