Is it normal for your to be tender on and off during early pregnancy?

I recently had a miscarriage 6 weeks agao, and have just found out i am pregnant again... before next cycle.. possibly around the week mark. I was wondering if it is normal for my to be tender on and off during this early stage? As i am petrified of losing this one as my stopped hurting before,Do any of you think that my chances of miscarrying again are slim as i caught so soon after the mc and continued to take folic acid?