side pain

So last night during one of my many wakes to switch sides I had an increased pain in my side more than normal noticeable I was rolling over and it felt muscular. I was half asleep I remember feeling pain and holding my side then rolling over and going back to sleep. It's not hurting this morning and I get achy on the sides all the time, baby is moving like crazy so I'm not worried about him, anyone else have this happen? I clearly wasn't too worried in the middle of the night cause I went back to sleep but now I'm like huh?