Seems like it can be a common phase at that age, I remember my son & my nephews all doing it to some extent... three months seems longer than they did it though, so I am not sure... hopefully someone else will have better advice for ya!
My oldest ds (who is now nearly 16) stuttered at that age. It is very common in boys, especially those of high intelligence. (No, I didn't make that up!) We were told not to sweat it unless he continued into kindergarten. He did continue so we had him tested and seen by a speech specialist. He met with the specialist weekly for about 6 months and it gradually stopped. We found the speech specialist to be very helpful as she assured us that it was common and worked with dh and I on ways to help ds at home. It was all very calm and natural. The biggest thing was to gently remind him to slow down (we used the term "turtle talk") and assure him that we would not interrupt or hurry him along. He was a young man with a lot to say and he seemed to feel stressed about getting it all out. You can ask your pediatrician for a referral to Childfind to have him tested and, if appropriate, he can get speech therapy at your area public school - even before he is school-age. Good luck!
3boysmom- I would have to agree on the high intelligence!
He wants to say sooo much and seems to get caught up.
I guess I will see if he keeps stuttering and if he does I will get an evaluation.
From what everyone has said my hubby and I will try to slow down on our end and just keep listening to our son with open ears!
More recent research suggests that you should have him evaluated sooner, rather than later.
Have him evaluated soon if he's getting stuck on the beginnings of words so "It's a g-g-g-g-garbage truck" is more worrisome than "it's a gar-gar-garbage truck". The first merits attention now (or so my speech pathologist professor friends tell me!), the second after 3-4 months. It's one of those things that if you can get it stopped early it's much easier to 'cure' than if it goes on for a while.
I'd wait a month or two and see. MOST stuttering in children resolves without any intervention (something like 75%). It's pretty common for a child to stutter if they've just had a recent spurt in language.