Why Am I Feeling Alone in My Pregnancy?

Rant beginning... So I’m almost 23 weeks pregnant with my first child. I live about 2.5-3 hours away from my boyfriend due to school and i also work part time... He has came to visit me 3 times since August I used to go up once or twice a month before i found out i was pregnant in February and got my part-time job, he’s missed 3 of the 5 doctor appointments I’ve had (including the gender ultrasound) and he didn’t bother come visit me this long weekend and he wonders why I am upset. He blames me for the arguments because I am so frustrated and done with feeling alone through this pregnancy... I want this to work but I also don’t want to do everything alone and do everything one-sidedly... Rant over...