Pressure/mild cramping on right side?

Ruby • Young Wifey and Mummy 💖
I'm 5 weeks 5 days today and I've noticed every night for about a week and a half now I have this pressured feeling on the right side of my belly starting at the lower belly and sometimes extending all the way up past my belly button. I only have this at night time.. Does anyone know iff it's something I should worry about?