Good Morning,I am sorry to read that you are going through a tough time. First of all remember this is about you and not your husband so accepting that you need help and choosing to take medication is a personal choice. Use your Dr. and perhaps therapist to talk out your OCD and look at therapy and treatment that will benefit you.
Try to avoid getting into heated discussions as it only causes you to feel alone and sad because your mind is tricking you into believing your husband doesn't care. I believe he does but he does not understand mental health disorders and OCD is a mental health disorder.
We would never expect someone to "get over" diabetes by strength of will or consider it wrong for a person with arthritis to need ongoing physical therapy. Yet most people I know including my own husband do not understand anxiety or depression and feel that you can just shut down your stinkin thinkin and all will be well.
Understanding your OCD disorder is a challenging endeavor for your husband so perhaps by education you can help him and and therefore help yourself.
The first thing that your husband will need to accept is that he will never truly understand what you go through on a day to day basis, but if he educates himself on the disorder he will be able to assist you in coping, as well as himself. Remember you cannot control him so give him time to accept your dx in his own way.
Here is a link to an article that will help you and if you like it - print it and give it to your husband but remember he may just glace at it initially and throw it on the table - don't let this upset you as remember you can lead a horse to water but you can't make him drink.
http://www.nami.org/Template.cfm?Section=By_Illness&Template=/TaggedPage/TaggedPageDisplay.cfm&TPLid=54&Contentid=23035
I have had anxiety and depression for 30 years and I cannot tell you how many articles I have printed only to find them laying on the kitchen counter after my hubby glanced at them and made no comment but at least he glanced.
Be well and stick with us as we will help you through the tough times.