Light cramping at 19 weeks - is this normal?

Jg • Pregnant with TWINS after mc in April 2015 -looking forward to this journey - trying my best not to be anxious
So I am almost 19 weeks with mono-di twins and have noticed today I am getting a little bit of cramping - more uncomfortable than anything - is this just growing pains again ? It's more in my groin area like above the legs. Anyways any feedback would be great - I'm currently laying down with my feet up and drinking a ton of water. Thanks ladies