So basically I got pregnant really quickly with my boyfriend - I'm currently 25 weeks. When I started seeing my boyfriend he told me that he had issues with cocaine but he was clean atm, fast forward a month and a half he started using again but only socially so I 'allowed' it (regretfully). Since we found out I was pregnant he's been stressed and has been doing it 1-3 times a week, blowing basically all of his money weekly. I gave him chance after chance to cut it down and get help, and every time he just carried on. And last Sunday I was done, I left his and came back to my mums and basically gave him the ultimatum of 'touch it again and we're over' he was sorry and all that. But I've made a point of not seeing him all week as a mini break from each other. Anyway he was supposed to come to mine tonight but didn't show and I sucpect that he's 'on it' for various different reasons, which could also (unlikely) be innocent. 

Point of this point is me being nervous and anxious that he has done it as I've given him ultimatum and it will mean I have to leave him (or he will think I'm just all talk) and I'm terrified of being a single mum at 22 before my baby is born. 

Rant over - any (constructive) advice?