Hoolahan,sorry but are you trying to scare this poor mom to death?
I agree that he needs to see the family doctor,but I think this is more likely to be a problem of his brain trying to go a bit faster than his mouth,he's in such a hurry to get all his new ideas out and communicate them to you!
My son was EXACTLY like this 6 months ago(he turned 3 in October)It was more of a problem if he was tired or if he was really excited to tell us something.It gradually stopped of its own accord.
It is heartbreaking to watch and a worry for you,just try to be patient and let him tell you things in his own time.
Get him checked out and in the meantime TRY not to worry too much-not easy I know-it's what we moms do best.
Let us know what happens,ok?
Feel free to pm me,we can be worryworts together!