First off, I think it's great that you're considering having children :) Now, if you are a carrier of the gene, and your husband definitely has CF, then it is not only possible for your children to be gene-carriers, but to be born with the disease itself as well. I believe there is a very large possibility that one of those two scenarios will occur, but it is possible to have a perfectly healthy baby.
On a side note, I personally don't think that you should worry at all about your child being a carrier of the gene. Yes, it is a definite possibility, but I do not think it's a huge life-altering occurence. The child in question would just have to be aware that he/she has the gene, and when looking for a future spouse be aware of the possible risks of having children if the spouse is indeed a carrier also. My parents both have the gene, and out of the 4 kids they had, only one of them has CF (me), and my oldest brother is only a carrier of the gene, and it has not affected him at all in his life. In fact, he just got married, and his new wife was tested for the gene, it came out negative, and all is clear!
While the gene is not too much to worry about, the actual disease is something to consider when thinking about having children. while modern medicine has made extreme advances in the last 30 years, CF is still a disease that needs a lot of attention (in the majority of cases) in a child's younger years. Between therapies, medications, possible sickness/hospitalizations, doctor appointments, etc, CF takes a lot of work and dedication from the parents. I would definitely say to take all the facts into consideration to make sure you're ready for the possible outcome of your children being born with the disease. But I think having children is a great decision :) Plus, in your case, if you had a child with CF, at least you could be somewhat prepared because your husband grew up with the disease. For my parents it was like walking in a dark room without a light; they had no idea what was going on :)
At the risk of sounding corny and slightly sappy, even though I have CF, and have known about it now for almost 18 years (I'm almost 20), I'm glad that my parents had me :)