second pregnancy..back cramps?

Bri

Hey guys, is anyone experiencing lower back cramps this early on? I've been having them on and off..pretty uncomfortable. They go from lower back cramps to lower stomach cramps and sometimes I have both of them. I didn't have them when I was pregnant with my son. I just had a miscarriage last month and gotten pregnant again 2 weeks after the miscarriage.. so I am kinda scared if this a sign of another miscarriage! Any info will be helpful!