I'm 8 weeks pregnant and from around week four I've been suffering from really bad lower back pain. I had a MMC over Christmas, with that pregnancy I had the same lower back pain from around 4 weeks which disappeared when the miscarriage completed.
I have one other child and I had terrible back pain with him, but it wasn't until about 32 weeks, but it was the same pain in the same place.
I'm obviously not big enough to be having back pain from increased weight/baby, so does anyone know what could be causing this? I'm very fit and healthy and am now worrying that I could be having this for the full pregnancy (hoping this pregnancy is a successful one).