Looking for a French film fairly recent i think

I cannot remember the name of it. I found it on Amazon or Netflix ? 3 years ago.
French with subtitles.
A man accidentally knocks down a teenage girl with his car on road. Shes ok but she doesn’t want to go to hospital because she has ran away from home? …, so he offers to take her to his house to recover. She then meets the mans pregnant wife and she slowly befriends them. The Plot twist is that somehow shes gone back in time and the couple are acually her real parents, and the baby the woman is carrying is Her ! So She gets to see herself when she was a baby.
Complicated plot …but i missed the end! And couldnt find it again. Hope someone can help. Thankyou