depression over false scares

Lexus
Hello world just wanted to get somethings off my mind and love this open Fourm ,it allows for people to share experiences and get a reply.  
   Anywho I am 26 years old with one son. I have been on and off with my fiancé for about 7 years now. I have a bad case of baby fever and am ready to have another. The past 4 months have been filled with rocky ups and downs and me wanting this baby, however I keep getting negative results. (Here's a little back story as to why I am ever so distraught.) Back in 2013 me and my fiancée broke up. Not knowing if it was for good I persused A relationship with another guy. In which I got pregnant twice by him (I had my first son January 17 2012 by my fiancée)with that being said during during this time with guy #2 the first baby he wanted aborted. I hate abortions but if he didn't want it it was unfair to me to have it so we got rid of it. Shortly thereafter (about a month or so) we got pregnant again when that happen my sons fathers was calling me like crazy and I could only think how it would feel if I had another baby knowing that one day we may be together. It didn't help that I found out all these disturbing things about guy #2 he was a rapist and acquitted on murder(not that you should judge) but I wasn't a healthy me with him, we tired mollys ect together I was always high. The long and short of that was I got an abortion again but guy #2 wanted to keep it and get married but I couldn't thinking of my fiancée, financial situation and everything guy #2 put me threw (he was no Saint he did a lot of mean things to me) fast forward to 2016 about two months ago after working hard me and my sons father now are moving along great. About two weeks ago I received a phone call from a woman claiming to be 5 months pregnant with his child (it was before we got together) and he didn't know I was crushed because I want a baby so bad and I feel like she got my joy and that he didn't think. Now I'm sad and am moving on I still love my fiancée but I wanted a baby we are sticking together threw this situation but now she keeps calling him telling him she's giving the baby up and I simply said we could take the baby and her words were ( you think I'd let you and that bitch raise my baby??) I love kids to death would never hurt them and you think of adoption before letting the daddy have his daughter....... I don't know what to do my life is everywhere at this moment. Will update as I go. Encouraging words or shared experiences will help.