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It could be two possible conditions. A Corpus luteal cyst
which is bleeding or an ectopic. Chances of an ectopic may be less in your state. The Corpus luteal cyst may be bleeding inside causing pain and discomfort on your abdomen. The cyst should disappear in 2-3 weeks. Other conditions which can mimic this is endometriosis
. You haven't mentioned anything about your Cycles, which if you do I can help you figure out what's going on. It would be best to visit the ER and get an ultrasound
to confirm, you may take a Tablet Meftal Spas
immediately for the pain.