Welcome to HealingWell!
Cramps are extremely common with IBS... You will find that many of us here get them. Have you spoken to your doctor about
antispasmodics? A few of us here also use a heating pad to help soothe the pain... Have you tried that yet?
As for us knowing if you have IBS, that is hard to say. What sort of tests have you had for your doc to conclude it is IBS?
Sometimes the weekends are kind of slow, so don't be discouraged if you don't get many replies right away.