She vomited juts twice. And it's not often. I don't think it's IBD because she's had constipation almost forever. And her pain is definitely not like IBD. It seems like IBS minus the v omitting. It hasn't happened lately. The doctors said it was suspecting for ibs too. She said she feels better when the bowel movement has o ccured. And when she has the pain it's like totally okay I mean it's not cramping or debilitating either. I think she's not having IBD?
What about if you consider her symptoms minus the v omitting?
She'd said Buscopan relieves her pain. That is a peristaltic movement suppressor of some sort and as far as I know doesn't exactly relieve an IBD pain.
Her pain isn't increasing as well.
Upper GI vomiting could maybe not be associated with her other problems?
Even twice is too many times to vomit blood. That just shouldn't happen. It needs to be checked out.
As said above, it's not black and white. Just because her pain isn't cramping or severe doesn't mean it isn't IBD. Everyone experiences it differently. Feeling better after a bowel movement is normal with IBD, as well, and her pain certainly wouldn't have to be getting worse.
IBS is generally first step for anyone with GI problems. The majority of us go through that super fun phase where the doctor says it's IBS. Unfortunately, some of us get stuck there, even though symptoms indicate more is going on.
Buscopan helping also doesn't mean much. Yes, it generally wouldn't help with pain associated with IBD, but it can function as a placebo medication. Just expecting it to help, or even hanging on to some hope that it will, can sometimes make the difference. Doctors actually prescribe this for people with IBD too.
Obviously the vomiting could be attributed to something else. That's why it's important for her to go to the doctor / ER and find out what the cause of it is. If it turns out it is being caused by something completely unrelated to her other symptoms, then yes, it's very possible she has IBS. However, that seems unlikely.
It seems as if you want it to be IBS. For her sake, I hope it is as well. However, let's be careful not to ignore symptoms so as to make that hypothesis fit. Again, she needs to get a formal diagnosis so that whatever the problem is, it can be dealt with.