It can be very hard on a relationship having Sp, I know. When I was married in the beginning I would feel alot like you Marge, like I was going to make him unhappy and how could we ever have a normal life when there was so much I couldn't do. At first I couldn't even eat in front of him for about a year into our marriage, this deppresion came over me and it was very very hard, but time passed and it got better..now there isn't anything I can't do in front of him! Even act totally silly! We've been married 8 years now and its all gotten better w/time.
But I had to understand that he may not ever fully understand me, even though he loves me, it is a hard thing to understand. I tell him now, even if you don't understand me, just help me anyway. Then I tell him how he can help me specifically. He isn't a mind reader, I used to think he was!
One last thing my hubby says helped him to understand me better is that I tell him to think about what he is most afraid of: for him it is hieghts, and tell him to think how he feels when he is high up then tell him that is how I feel walking out the door or going to the store, almost every day.
I think we are all afraid of something or other maybe ask your husband what he fears the most and then tell him thats close to how you feel so he gets it a little. Tell him its not something you can control just by willpower or you would have done so allready. Just speak from your heart and try to do it calmly w/out fighting, don't let it escalate into an argument. Both of you try to understand ea. other a little. Good luck and God bless you.