Rib Pain

Jordan
23 weeks, FTM, and on my bottom rib on the left side I've been experience this discomfort the past couple days. It almost feels like someone is pulling on my rib? I was thinking maybe it was my baby's foot wedged underneath but (i dont think) he is that high up yet, i feel all his kicks down low, and this doesnt feel like a kick sensation. Any ideas whats causing this weird feeling?