Bad Cramps? Could be TMI

I'm 5 weeks 5 days. im experiencing normal first trimester spotting but wondering if I should be concerned about the cramping. it's not light but it's not super heavy either. I have gained a little weight because my weight fluctuates alot. I'm at the point where I'm not sure of its poop cramps( I'm at some weird mix of constipation and diarrhea), my pants pushing on my belly wrong, or anything more serious. There isnt really heavy bleeding, so I really want to believe it's not anything super serious.