Rosa, you and your husband are still dealing with a lot when it comes to emotional issues and emotions affect how we as couples have sex.
You must communicate with your husband. You both need to get to the point of feeling comfortable together again. Are you you both talking, asking each other how you feel, massaging each other, going on dates, etc.? Have you and your husband sought out counseling and if not, is it something that would be considered?
On the pregnancy issue, there are many different kinds of birth control you can try. You can look online and read up on all sorts of different options available to you. Or ask a doctor/GYN. They can help inform you on making a decision you will be happy with. I currently was considering getting an IUD inserted. I would suggest deciding on something before you both plan on having sex again. Since it may preoccupy you or your husband during intimacy.
But glad that you and your husband have reunited. I wish you both the best of luck