So unhappy

So i have a 3 year old son from a previous relationship and just found out I'm pregnant by my now narcissistic ex (we'd been on and off 2 years) I was ready to start dating again and found this out. I feel like I will never be able to find my true happiness 😔. No one is going to want a woman with a 4 year old and newborn.. I just can't believe this is happening. I'm so depressed bc I didn't want another baby right now. I feel more upset then happy especially since it was unplanned. I was thinking about getting an abortion but can't bring myself to do it bc I know I'll regret it especially since I don't believe in killing something with an already beating heart. I just need some encouragement from someone who's been through this. I just want to cry everyday.