Early pregnancy pains

Taissa • First pregnancy! 20 ! Super Excited& nervous . Due date June 3rd 2018 😊

Hi!

I'm almost 5 weeks pregnant. I've been extremely exhausted! I have also been experiencing constant cramping (not terrible ), pelvic & rib pain especially when I'm walking for a while. Also a Back pains. The Dr says it's normal but has anyone else experienced the same thing?