+0

I have seen both with and without.

After a while I stopped yelling at him and left.

+0

They are both correct.

+0
anonymous

I have seen both with and without.

After a while I stopped yelling at him and left.

I follow a style guide that says no comma after an introductory prepositional phrase unless it's quite long (approximately four or more words). You can use your own judgment on these.

CJ