It sounds like you have been through a lot and are clearly a tough cookie!
It is a great achievement to have coped without medication as well as you have. I am sorry that your ocd has started to flare up. I think it would be a good idea to speak to someone about it, it is probably not going to go away by wishing it away. They will find out eventually why not do it on your terms and before things are put of hand.
I have you had any therapeutic support for your ocd? Even if you have to go back on medication to get things back under control that's not to say they have to be a long term strategy.