what is this uncomfortable feeling?

Caitlyn • 22, Canadian. 2nd baby girl coming in March! Lovely husband. Lovely daughter. Lovely life. 🙏🏻
Hey guys I'm 30 weeks pregnant and for about the past hour I've been having a calf cramp in my right leg and feel like I have to poop but I don't. I'm not in pain so I'm not worried, just curious and maybe some of you know how to get rid of it as it's uncomfortable. Thanks!! :)