First, you aren't alone. There are many, many men that are survivor/victims that do not admit to being in abusive relationships. That is changing and changing rather quickly now. The number of men coming forward in the last 7 to 8 years regarding being abused is increasing dramatically yearly and it is happening globally. Several TV shows have now had episodes where the man is the survivor of domestic abuse, "Las Vegas" and "Law and Order" to name two. It looks like the abused male is going to be a hot "in" topic in a few years time.
Regarding your relationship now. You are being abused and can get some counseling for yourself through a local domestic violence center. Some aren't equipped to handle men so you might have to call a few before you find one that works with men. Make the call to their office, not the hotline and ask for an appointment with a counselor or advocate. That first meeting should be a huge relief for you because they'll know what you are going through and you will not feel so alone. Don't worry about cost, these centers work on a sliding scale and if you can't pay, you don't have to.
You'll want to read up on domestic violence and abuse too. Here are some sites to get you started.
http://www.edvp.org/AboutDV/cycle.htm
http://www.justicewomen.com/tips_escape.html
http://womensissues.about.com/od/dom...e/a/dvquiz.htm
You can have a look at the thread that Becoming talked about by clicking this link. You may be surprised at what kinds of men are in abusive relationships.
http://www.loveshack.org/forums/t631...hlight=stabbed
Couple counseling may be an option but your fiancee will have to agree to go to counseling and if she fits the profile of an abuser she'll do one of two things, either refuse to go to counseling or go to counseling and then stop going because she will say the counselor is no good.
Best of luck and keep coming back here for support too.