I'm sorry to hear you are feeling stressed
I can relate, I too have always been regular without much clotting. After having my daughter and resuming normal cycles, I have had mid cycle bloating, cramping and back ache. It could also be caused by ovulating! I have had a transvaginal ultrasound and given the all clear! It could be as simple as a fluctuation in hormones! If your heavy clotting was over that quick I am sure it was just due to stress!
Are you scared to go to the doctor? If it helps, I have had a friend who has had multiple Pap test come back abnormal and she doesn't have cancer. They just monitor it. So I am sure if it was of concern it would be caught in time. Where I am we only go every 3 years, but I am considering having one done before the 3 year mark as we want to get pregnant again!
If it helps, I'm only 27 and have feared ovarian cancer and now am scared I have breast cancer. I know how hard it is to shake these fears. I try to tell myself that while yes having cancer would be terrible, I have no control over over it. And even further, I could just as easily die in some freak accident and then what? I have spent all my precious moments stressing about something I can't control, instead of living.