Pain on left side

Hannah
woke up in the middle of the night on Friday because I had to use the restroom. I laid back down tossed and turned trying to get some rest, I lied on my back and after about 30 seconds of that, it was like a sharp pull hit me on my left side of my lower stomach, and it felt as if it went down to my groin. It hasn't bothered me since, except for tonight (Sunday) it just feels as if something has been stretched and it's almost a little uncomfortable. I'm a first time mom and very in tune with my body so I notice all of these things quick, just wondering if anyone else has had this problem or has any ideas or suggestions?