Weird pains So I'm pregnant with my second and it's completely different. Anytime I stretch I have…

Weird pains

So I'm pregnant with my second and it's completely different. Anytime I stretch I have horrible sharp pains in my lower stomach. It's also there anytime I lift anything. My son is 3.5 and it hurts to just lift him. ? is this something I should tell my doctor about? Or is it normal?