I had many issues a few years ago, a fear of pregnancy, self esteem issues etc and the intimacy in our marraise suffered alot. After getting the Mirena IUD, I can honestly say that it has made a huge dinfference in my life. I'm not afraid to get pregnant, and my hormone levels and mood swings have evened out. I really feel much better overall. I think your husband's willingness proves how concerned and understanding he is of your fear, but I must agree that you may feel better if YOU take the lead on the BC issue.
Also, I agree that there is much truth in the fact that you have to accept that if you do all you reasonable can to prevent pregnancy and it still happens then it's simply meant to be. DH and I argued for about a year (from the time oldest DD was 2 1/2 to 3 1/2) about having another baby. Oldest DD was a suprise and DH just wasn't ready for another baby. I was soooo ready. After many talks, arguments and tears, I accepted that DH wasn't saying no for forever, just for a couple of years. We wanted to get on better financial footing, spend time together, and grow up a bit. (He was 17 and I was 20 when oldest DD was born). I made my peace with it. We saved up some money and took oldest DD to WDW when she almost 4. I became pregnant sometime during the week at WDW. I was on the pill, and we used condoms as well as watching my ovulation dates and avoiding fertile days, and STILL became pregnant. And to be honest, I was a bit upset. But I love my daughter. She was my gift.
But after she was born, I knew it was time to really explore better BC options. I tried the patch, the Nuvaring and finally the Mirena IUD. ALso tried Depo years earlier but the weight gain and mood swings were so horrible I wouldn't even consider it this time. I love the Mirena.
Good luck to you, OP. I hope everything works out OK.