She was having an affiar with a married man and when he ends it she tries to kill herself

She is taken to the hospital and her stomach is pumped. She then starts to see ghosts.

She sees her lovers dead wife and learns she killed herself when she found out he was having an affair.

She realizes at the end of the movie the ghosts she sees are trying to be reincarnated.

And the dead wife of her lover wants to be reincarnated in her baby. They dead wife is a very nice woman and very sad so she lets her and she gives birth and the movie ends


In part of the movie near the end before she gives birth and sees her lover's dead wife, she
Sees a spirit go into this other woman's womb before she gives birth- the old man had a birthmark on his forehead and when the baby is born the baby has the same birthmark and the mother says the birthmark reminded her of her dead grandfather

Well I think it's the same movie, I hope it is!
“The Eye 2” – The second movie in “The Eye” series, this deals with the Chinese urban legend that a pregnant woman who attempts suicide will have their baby possessed be the spirit of another women. The woman in this case is the dead wife of her lover, and the movie remains a hard watch with the unborn baby the focus of the demonic possession.

I watched it only recently so it's the only one I can think of to match the description!
Hope this helps :)

Yes that is it! Thank you!

Glad that I was able to help :)