Screaming during a diaper change.

DS is on gerber good start gentle, but he ran out and I ran to the store and ended up buying gerber good start 2 gentle, I didnt even know that existed. I didnt know the difference (except the ages where different) so I gave it to him anyway. Well about the same time I gave him this formula he has 3 teeth trying to come in. I didnt know if his green poop is from his teething or the sudden change in formula. Also he screams when I change his diaper but only when I wipe his bottom.

Could this be because of the formula or something else?

Should I call his doctor tomorrow?

Hmmmm. My dr says if you change their formula suddenly it can make their poop like acidic. And burn their little bottoms.  . Maybe you wiping it agitates it? I'd call to be sure. But with teething its hard to say as well. I'm sorry Momma! It's hard when they're in pain!!

Quoting Love Muffin:" Hmmmm. My dr says if you change their formula suddenly it can make their poop like acidic. And burn their ... [snip!] ... agitates it? I'd call to be sure. But with teething its hard to say as well. I'm sorry Momma! It's hard when they're in pain!!"

With his first 2 teeth their were no changes in bowels, but he got 2 more teeth back to back and now 3 are trying to come in together  . He is always changing formulas suddenly, we go from similac to gerber throughout the month so I wasnt sure if it was because it was gerber good start "2".