stomach feels odd at 8 weeks 4 days

T🌸
I don't know how to describe it, it's like an achy heaviness I guess? I just feel uncomfortable. And occasionally I will have a sharp pain or two so I'm assuming it's all because of stretching maybe? I had an ultrasound yesterday and all was well. With this + the constant fatigue + headaches I have been in the bed all day 😕
Have you ever experienced this?