Cramps in vagina

Myia • 28 year old first time Mommy with twin boys born Nov 14th 2016..mommy so in love with Mekhi & Malik❤❤❤❤
Im 17wks preggo and yesterday and today i have felt cramps in my vagina on a scale from 1 to 5 with 5 being the most pain i would say a 2...it doesnt happen alot but does anyone know if this is normal? No bleeding or discharge just cramps every now and then