Michelle, a VERY good friend of mine had a really nasty case of uterine cancer. I can tell you more if it would be useful, but for now the main thing I want to pass on from her experience is that she and her husband encountered NO longterm negative impacts on their married life, even though some of the treatment was pretty radical.
So snuggle into those strong arms, confident that you will always be right there; together you will sail through this temporarily rough sea.