Lump on left side

Kashia • My name is Kashia I am 28 I have an amazing fiancee his name is Nathan Mccormick it's his first baby as well as our first baby together
I was layin here feel in on my tummy I'm 8 weeks today. I can feel a lump on my left side it doesn't hurt an sometimes after I stand an move it goes away but usually comes back later on..what is it shld I be worried