Pulled stomach muscle?

So last. Ugh this I went to a water aerobics class. Right before the class I ate dinner & while I was taking part in the class, I felt like I had a stitch in my stomach.

Over 24 hours later, the stitch hasn’t gone away. It’s quite near my belly button, definitely feels muscle, not really so, just mildly sore & uncomfortable to touch.

It’s also sore if I sneeze or fart 😂🙈

Has this happened to anyone before? If so, how long did it take you to recover?