Anyone else?

I'm 16 weeks tomorrow and lately I've been feeling this weird pressure on my right side and rarely on my left side. It feels like if the baby stretches or something, but I don't see it on the outside. I've felt flutters since 11 weeks so I wouldn't be surprised if it's her. Is it even possible though? Has anyone felt this too? Lol this is baby #2 and she's been giving me a crazy pregnancy. Completely different from my first daughter lol