I don't have much of a bump yet!?

I am 8 weeks and 1 day. I keep seeing bump pictures from like 5 weeks... I've been taking the pics too to track on the app my growth. But it's starting to worry me because mines not all that different from week 4! Sometimes I have to unbutton my jeans a bit now to relieve some pressure, but some ladies really have a bump/bloat. Should I be worried??