What happens if i strain on the toilet then feel weird do i have a aneurysm?

An aneurysm is a thinning of an artery that can burst. Aneurysms occurring in the brain and burst will fill the head, face with blood until the head is enlarged beyond normal size. There may be no correcting a burst aneurysm and death occurs.

Probably not.  There is a name for that, though.  

no  thats not an aneurysm, thats the result of straining, uses a lot of energy

i know because a few of my own painful slow diarrhea episodes were like giving birth, and im dehydrated as hell at the end  

Omg I hope you aren't one of those broads that doesn't realize they're pregnant til the infant takes a swim in the bowl. Tsk tsk