Normal aches and pains?

I lost a baby at 17 weeks back in March. I’m now pregnant with another sweet baby and am 18.5 weeks. I’m not having contractions but I feel pain on my left side and feel pressure on the lower part of my uterus but not quite on the pelvis. I know this may be a stupid question but are these the normal aches and pains of pregnancy that people experience? I am bigger so I felt like my extra weight was dragging me down but I just need to make sure.