Weird Feeling 2nd Trimester

So I'm just over 18 weeks and when I was walking I had this weird feeling right in the front just above my pubic bone, almost felt like a pinched nerve or something. It wasn't painful at all just kind of uncomfortable and almost made it hard to walk for a second. Happened for a second or two and then went away and happened maybe 3 times total. Anyone know what this could be? Definitely was a weird sensation and felt like it was coming from the inside.

EDIT: It does not feel like round ligament pain. I've been having plenty of that and it more like a soft pain. And it's now achey and just feels like soft pressure coming from the inside.