What’s wrong??

Hey everyone! So a little history... I had my period beginning May 5 and it lasted until May 10. Everything was normal. According to eve, my fertile window/ovulation lasts from May 15 through May 21. On May 15, my boyfriend and I had sex. We used a condom and he did not finish. The next day, I started having persistent cramps/pain in my lower abdomen. It doesn’t necessary hurt, but it’s feels like a deep pressure. It almost feels like period cramps. Sometimes the pain is centered and sometimes it is to the left or right side.

Is this pain something I should be concerned about? What could be causing it? Any helpful hints or advice would be greatly appreciated!! Thanks in advance!

Update:

The feeling as persisted. By this time, my fertile window has ended, so I’m not sure if the pain/cramps could be from ovulation.