Can't get over it

So me and my boyfriend been together for 2 years and 6month this month , he's my first love and before.we got together we were friends for 3 years but point is before we made a year , I got pregnant.... we were staying at his mom and step dad home till we got our own place but you see I.was 16 and then we found out I was 2 months pregnant when I went to start my new birth control and long story kinda short ,at first he wanted to keep it but his mom said we should abort it cause we were too young and told us her story of her having my bf at 17 and so on but I guess after a conversation with his mom without me , he agreed and I was already alone cause I had lots of family drama and I wasn't no where near close to me mom so I felt like I had no type of support and so then he said we should bring a baby into this world when we're ready and can give him/ her everything she/he needs , so I just went along cause I honestly felt hopeless and depressed already, Anyways the day comes and I was trying to be positive even while crying and then after.it was done and I woke up I screamed and started crying cause I immediately regretted doing it , and now I still regret and I still cry cause I keep thinking "wow I let someone kill my baby and it's my fault ... I killed my baby" even writing this I'm crying and my bf just doesn't understand , like our baby would of been 1year and 2 months old and it kills me :(