Boyfriend trouble- 17 weeks pregnant and his out at the pub?

Hey

so im living with my boyfriends parents

and im also 17 weeks pregnant (with my bf's baby)

me and him always go out on friday night for dinner and this friday he tells me we cant coz he didnt make enough money this week.

Then he tells me that he needs to go to the shops and get a pair of jeans and that i shouldnt come because there will be lots of walking.

so i dont. his out the door 20 minutes after getting home (its like 3) and then it comes to 630 and his still not home.

so i call him and he tells me his at the pub with mates and then his going back to his mates for a few drinks.

i was pissed off that he didnt tell me that because i had made myself look all nice for a night in with him because like i said.. friday has always been mine and his night.

anyway im crying to the point that im throwing up because my hormones are everywhere and i think that im too fat and ugly to be seen in public with him.. because its like the 4th time this has happened.

like i can go to the pub too..

anyway he says his not sure what time hell be home but he will be

i wait.. and wait..

it gets to 1130 and i call him and his phones off!

so i have to find out whats happening. i dont get any text from him except 'sorry' coz i told him he made me throw up and then he pretty much told me that he never gets to spend time with his mates.. which is a load of bullshit coz every weekend their over here and always stay the night.

so i have to get someone to text the 3 people his with to find out whats going on.

and i find out his not coming home tonight because his drinking him self into a coma.

so i tell the chick - who i hardly even know to tell him that im gonna sleep on the couch for the rest of the week coz of all the **** he put me through tonight..

Did i do the wrong thing?