8 months pregnant and in a long distance relationship.

I am a 25 year old African female engaged to a 23years old coloured male, we’ve been dating for 8years now, He is currently studying in America he completed his 2nd yr. end of December and was to get his associates degree in December an come back home to continue for his Bachelors in S.A as we expecting our second baby, and we planned to study part time and work for our lil ones. He’s from a racist family, he’s mom and dad don’t approve of our relationship since we started dating, his dad told me 2years ago they won’t give us their blessing and as far as he’s concerned we are not engaged. This year I found out I’m pregnant when he was here for holidays told his parents and they weren’t talking to him, he went back to America and when he was supposed to come back in December as he promised and as he normally used to come, this time he didn’t come, said he failed a subject and said he was to finish writing it in March, He’s been that side ever since last year ,I’m eight months pregnant and deliver in March. he also said he would make sure he comes before I deliver but that also changed. Later in January he said the subject ends in May which was the time he normally came for summer holidays when he was studying on a full time basis. He said the school wouldn’t let him graduate if he didn’t stay and finish the failed subject till May, My daughter is turned 6 in Feb and she constantly cries for him and she also hoped to spend Christmas with him and her birthday as he promised on the 5 feb but instead he says he’s been busy with classes so he cant chat, This is not only draining me, affecting my pregnancy but it’s affecting my daughter. I asked if he was gona come back for good and complete his studies this side but he wouldn’t answer me until I wanted to break off the relationship, now he tells me he has to stay that side full time and will try come visit us in May, I’m tired of all the lies and constant story changes, His parents told my mom if we need anything for the child we must tell them and leave him as they got a place an car for him to stay in America and the my fiancé is still a child an needs to complete his studies there, and they say they don’t have money to bring him here but they keep going that side to visit him. I don’t know what to do anymore, He says it’s the only way we can get blessings from his parents if we do all they ask of him, Now il be looking after the kids myself and I’m working 8 to five an going back to school in May, My mom has been very supportive as she can see its only breaking me. I feel like I can’t go on like this, I just don’t want to do something il regret, as he constantly says I’m stressing for nothing and he’s doing this for our family, please help me as I’m on the verge of giving up.