Sorry to hear about your husband. You have managed well for the last few years looking after him. His needs have obviously become too difficult for you to manage . Be assured he is safe and being looked after.
It will take a while for you to adjust to this change in your life, it's very difficult to 'wind down' after caring for someone so don't feel the need to rush.
It will take your husband time to settle in and you may have been advised not to visit him for a while. If so, have you any family or friends you've been putting off a visit to?
Hopefully, you and your husband will find a new balance in your relationship and be able to enjoy each others company and be more of a wife than a nurse.
As far as finding help, I guess that depends on what help you need. Many people on here are going through or have gone through situations similar to yours. Even if they haven't this is a good place if all you want to do is sound off or ask for advice.