Hi,the first thing you should do is to empty out the 2 weeks worth of waste matter that is clogging up your large intestine. That's where much of that extra 5 pounds is undoubtedly coming from.
If you don't already have an enema bag, I strongly suggest that you consider purchasing one. It's probably going to take a series of enemas over a week or more to clean out your colon. Properly administered, cleansing enemas are the safest, most natural and most effective way of achieving relief from a case of severe constipation such as yours.
If you have any questions at all about how to go about giving yourself an enema, from the type of solution to the amount, best position to receive it, or whatever, please don't hesitate to ask here.