Im pregnant and my boyfriend doesnt care and asnt even tried to contact me since i come out the hosptl :/?

our relation ship as been rocky for a long time but because im in love with him i keep on running back, he's made me feel like he's all i need to get through each day i cant cry anymore tears about him because he's forever making me cry he always puts his mate before me and he doesnt bother to ring me unless i ring him first.. i always give him cigs and cook him dinner but then he just leaves to go out with his friends so im here alone :/ im now pregnant and it wasnt planned but i came out of hsptl on friday and on thursday night i phoned him up whilst i was there and he said i gtg i need the toilet.. :/ i had to go to the hospital all by myself and have a drip and tests done .. iv never felt this lonely in my intire life and i cant stop crying and i went on my msn which i havnt been on for years but he goes on sometimes and his msn status is i love chloe loads* his ex gf of 3 years :/ im sure he's cheatin on me and he makes me feel like crap all the time but im in love with him and i just want him to change but everytime iv tried to talk to him he's just blew me off and i dont no what else to do :'( im all alone and pregnant with his child.. and he asnt even botherd to call to see if im okay i havnt seen him since last wensday and hes at dannys 24/7 :'( hes 21 and acts like a 10 year old. i cant cope anymore :'( im so depressed and the thought of him sleeping with another girl makes me feel sick so bad :'(