Re: Husband with OCD
First and foremost, I understand how and why your husband's behavior is annoying to you as you feel the need to focus on your child. OCD can be very frustrating for the sufferer's relatives, family or friends, as they can't really understand why it is so important that some things have to be done one way and not another (as the obsessive-compulsive person feels). When he tells you he can't focus on anything else except the yogurt cup on the kitchen counter, he really is unable to think about anything else until you eventually clean it up. I am suffering from OCD myself (although not the same kind as your husband) and it is really horrible to try and fight the obsessive thoughts, particularly on tiring or stressful days.
Your husband should probably talk about this to a professional; there are more than one possible treatment for OCD nowadays. He can have therapy or take medication like Prozac or Xanax (I heard it's very helpful for some people who have OCD).
Whereas it is perfectly understandable that you feel you need to focus on your child right now, remember that, if your husband is suffering from OCD (and his case sounds quite severe), then he is going through a true nightmare, and he is going to need all the help he can get to eventually get better. Your husband needs you too; and it may not be good for your baby to grow up in a stressful environment, what with his father struggling with his disorder and all.
If you can't get your husband a psychiatrist NOW, you can always try to put him on the right track yourself by buying him a self-help book on how to deal with OCD; there are a lot of those. It could help your husband understand more about what he is going through and, as a lot of fear comes from not knowing what is wrong with you and why is it happening, it may relieve some of his anxiety. You can set up a kind of ritual where he tells you at the end of the day if this was a good or bad day for him (regarding his OCD) and what he felt he needed to do. Or, if he is embarrassed or afraid of what he's experiencing and doesn't want to talk to anyone about it, you can suggest that he keep a journal where he writes down his thoughts every day.
You should also probably tell your husband how you are feeling about your child. This might cause him to realize how big of an impact he is having on your family's life and maybe motivate him to get better so he can become a better father and husband.
Anyway, I hope I helped! Good luck!