Pain after period watery wet sensation since af ended mild cramp in abdomen pinching in left ovary before during and only for 2days after af.

If this is 1st time . You think you maybe at risk for an STI ; get tested.If not and this pattern contines : consider getting evaluation for uterin/cervical pathology such as :polyp or fibroids.
Worrisome. Pain and a discharge are worrisome for a possible infection. Your symptoms may all be normal but seeing your PCP or GYN would be a good idea. A full history, exam, and appropriate testing would be necessary to know for sure. Hope this helps.