I just walked away from a methadone treatment center?

I've been in treatment for 9 months and weened myself down to 5 mg per day, it was costing me right at 800.00 bucks a month to go due to the cost of gas to get there on a daily basis anyways I haven't been since monday...I'm very sick with flu like symptoms, body aches and irritable towards the world...I have already exploded on everyone in my home and on the verge of losing my family....is there any ways that i can overcome the irritably a little faster........these are the most terriable feelings I've ever encountered in my life I think.