Cramps and soreness

Destiny • 22 years old and pregnant with fraternal twins! Due late April! So excited! My first child/children!
So all of today I have had cramping sensation around my uterus, base of uterus, from back to front and from ribs to front of uterus (like I've done crunches) I am so sore and tender it is ridiculous and I and wanting to know if it is normal? I am 9+5 with fraternal twins. No bleeding, luckily, but I am so sore I cannot go to the rest room or even laughing without hurting. I haven't done any strenuous activities today either so it's not that. Help please?