Wow Michele.... I really feel for you being in the predicament you're in. Sadly, I have been there myself before....legitmate pain, but want off the Pain Meds. It truly DOES suck. If what you are talking about is in fact Fentanyl, coming off of it is absolutely NOT GONNA BE EASY. Small town or not, I sure as h*ll woulda filed the Police report and got the replacements for the ones that you lost. People still MAY look down on us that are on PK's, but more people would actually understand. It sucks to be in pain - and anybody that doesn't understand what it's truly like should keep to themselves.
But anyway.... Yes, Oxycodone and Fentanyl ARE different meds, they are both opiates, and can be subsituted for each other (more or less)....however, the Fentanyl is MUCH stronger, and it probably wouldnt be advisable to try ad take the same amount of Oxy to compensate for the same amount of Fentanyl. You could absolutely use the remaining Vicodan and Oxycodone to taper yourself off of the Fentanyl - read through these posts and I'm also sure some others will be able to give you a decent taper schedule to follow as to make the withdrawals as minimal and painless as possible. I can definately promise you one thing, though, it's not going to be easy as I said above. It is really admirable of you to want off of these things even though you are in pain though....I hope for your sake that you are a strong enough person to be able to do it. (Because you truly HAVE TO BE strong to do this, I wont lie to you). Go out and get yourself some w/d supplies - there's a great Sticky Post at the top of page one that gives you a list of a whollllllle bunch of things that will make this easier for you.
And while it WILL be hard, it truly IS worth the effort. Come here throughout the process and post....and post ften. There are a TON of good people who have bee i the same boat a you are in right now who are more than willing and able to hep you and give you advice.....and besides the fact, it really does help to it and read and post and read and post. Really, it does.
Good luck to you my friend....I will be rooting for you!!