Pregnant and feeling alone

Hi guys! Not to be a debbie downer but I needed to turn to someone. My first love and I were together 7years, and tried to have a baby, the first year we were together we had a miscarriage and after test and ultrasounds, and 7hard emotional years I was convinced I couldn't have my own children. Unfortunately him and I split and almost a year later I met someone new, who turned out to be a complete idiot, and suprise, I am currently 15weeks pregnant with his child, but since I dont want to be with him, he swears its not his. I just feel my world turned upside down because i wanted a child with the man I loved for so long and instead its with this moron. Not only that, i literally have lost all my friends and family and i dont have anyone's support and I thought I would have someone! And im facing this all alone and its actually quite scary any other single pregnant ladies out there in a similar boat?