Could I be allergic or intolerant to peanuts?

I'm a 28 year old female btw, on 06-21-11 after dinner I had five peanut butter cookies with some chunky peanut butter spread on them, then I was up until 2:30 in the morning sitting on the toilet and having really bad lower belly cramps [not in stomach]. Then on 06-22-11 I had a handful of party peanuts, then at 10:30pm to 11;30pm I was on the toilet again and with bad stomach cramps. It just started all of a sudden. So what do y'all think? Let me know ok, thanks =)