Yes i think that's normal... I've had that same feeling on my first one... your body is preparing for your baby to come out... but just keep track of it as well if it gets worst, you can always call your doctor
Theyre called braxton hicks, sometimes their painless and your stomach just feels tight, sometimes their shooting pains and you get them irregularly, its just your body prepairing to deliver the baby, i started feeling them around 15 weeks here and there and more frequently from 20weeks+. Everyone is different!