This is the second time It has happened to me. After my aerobics class I found blood on my pants but I felt sharp pain in the lower abdomen, like stabbing, twice during my practice. When it happened the first time, I didn’t pay too much attention to it but now it is a different story. I haven’t experienced anything similar before when not practicing. Is there a connection? I am only 23.
I can think of two possible options. One is an anatomic abnormality inside the uterus, a polyp or fibroid or there has been a disruption of the corpus luteum of the ovary. You are too young to experience bleeding from anatomical causes, as they are more likely at age 35 and over. However, I have a friend who was 18 when she was diagnosed with endometriosis, so I reckon you should better make an appointment to have that bleeding and cramping checked. There could have been a cervical irritation or even endocrine bleeding.