
Hi Steve, i'm not pregnant with twins but i have had abdominal pain with all 3 of my pregnancies. It is completely normal and is her body preparing for the growth of the babies commonly known as 'growing pains'. However if she is really uncomfortable and or has bleeding i would suggest a trip to the doc or hospital for a quick check.
hope this helps put your minds to rest, i'm still paranoid about every little thing and i'm nearly 40 weeks pregnant!!! You can't stop worrying until they arrive!!
Good luck,
louise xx