The data you provided (having intercourse with condom which turned out to be have a hole four months ago, missed menstrual period for two months after the intercourse, positive pregnancy test, heavy bleeding a couple of days later, pain in the lower abdomen-continuous strain to stabbing sensation), it seems likely that you might have experienced a miscarriage.


A miscarriage at two months gestational age needs revision by a gynecologist because both the embryo and the placenta are big enough and parts might not have been expelled completely (this is especially true for the placenta).


This might lead to small but continuous bleeding (which you do not report), and uterine inflammation accompanied with pain. The uterine inflammation does not necessarily have to be related to pieces of placenta left in the uterus. Because the uterine lining is disrupted when the miscarriage occurs, it takes time for the lining to heal. During this process there is a possibility that pieces of the uterine walls might attach to each other creating adhesions. The adhesions are pieces of connective tissue that form from secretions which were not completely absorbed once the inflammation was over. This connective tissue might pull the uterine walls causing the pain.


You might want to visit a gynecologist for a physical examination, and especially a uterine examination. An ultrasound scan might also be needed to check for pieces of placenta or adhesions.