Belly tightness

So my belly lately has been very tight on the inside, not the outside unfortunately. I'm 14 weeks 3 days and it's the first time I've felt like this. No matter what it feels like my insides are being smoooooooshed together and to me my belly looks really big (I know it's not though) plus when I'm laying in bed at night now, when I roll over, it feels like a tugging on my pelvic muscles. Is this a normal feeling? I don't feel like I need to be seen by a Dr or anything but I just could use some food for thought from those experiencing the same feeling or if this is something I should be more concerned about.