Cramping.. Please help!

Lacie • ICU Nurse. Mommy of 1. Expecting #2💗
  I'm 5 weeks and 3 days and I am having dull achy cramping like AF is coming. It's not bad but annoying.  
   I had a miscarriage 6 months ago so I am very scared of every little thing right now! 
   Can anyone give me some positive info about this please??!