Period dates: 02/13/14 and 03/09/14 - Last time I had sex was 02/28/14, 03/01/14, and 03/02/14, and as of today I have no cycle. I have 25 day cycles like clock work, and they have been this way for about 5 years now. I am worried because I was suppose to start 04/03/14, and I have taken 3 First Response tests, which all were negative. On 03/17, I went to an aerobics class for the first time, and it was pretty intense (I hadn't done aerobics classes in years). The next day I hurt in my abdomen and spotted for a couple of days. Could this have been implantation bleeding or not? March was a very stressful month for me altogether. I plan on taking another HPT this week. I am just worried. What do you think?
P.S. I only have one ovary and Fallopian tube. So, I am not sure if this may be a factor or even put me in the class of premenopause, because I will be 39 this year.
Thanks in advance!