Why cant i get it together mentally?

Ive always been a multi-tasker. I run a lot at work (everyone depends on me), I have 3 adults and 3 kids in my house for 9 months now and Im the only one with a job so i pay all the bills and at times lend them money for little things. Altho they do buy all the groceries with their food stamps. I just am relied on by a lot of people and I had to stop talking to my family cuz they are too critical of me.Well I decided to try to reilieve some of my stress this last week by smoking some crank my roomate got. It was ok...but I knew crack was better so I got some of that and smoked that too. Well I didn't sleep for 3 days nor did I eat much and I started having mucle spasms and facial tics. Now Its 5 days later and I feel shaky and even tho I slept 10 hours I can't get motivated to do anything all of a sudden. Im shaking and tired and my work is piling up. Ive always been a clean freak but the thought of cleaning overwhlems me right now. It can't still be the drugs in my system can it? Or am I having a nervouse break down or what???