Agony back pain? 5 1/2 weeks :(

Priscilla • Mummy to 2 beautiful boys, ttc our 3rd this year but had 4 miscarriages, finally got another BPF in November and we are due our baby mid 2015 :)

Ive been pregnant 7 times, 2 healthy boys and 4 miscarriages and now im 5 1/2 weeks pregnant.

I'm in cronic pain like agony with my back and leg cramps? I am possibly pregnant with identical twins, anyone had this? :(