Sex and being intimate with your spouse can be an incredibly healing part of R. It can also be an emotional and physical struggle.
If you have both gone and had testing, and everything is all clear, and you have desire to be with her, then by all means go for it.
Many of us struggle with what our brains are thinking while being intimate, and that can be a real struggle. This is when I switched my thought process from making love with my H to just F'ing him. I also made it very much about me, and the physical feelings, and enjoyment of it. We did have a post dday HB period where I felt the need to reclaim him, and did. But then as the reality set in, and some mind movies, it was emotionally draining, and frustrating for WS, as it would often end with me crying and nobody being satisfied (if you catch my drift). So I focused on the purely physical part of it. Which meant a discussion with H. Saying hey I am really trying here, and want to do this, but this is what is happening. I need to be the center of your attention and you to focus on makinge me feel like a queen. It worked, and honestly, switching up where, and when helped as well. A lot of quickies, so there wasn't time to stop and think about things helped too.
As I healed, I found making it just about the physical incredibly freeing, and made me stretch my sexual wings a bit. We have a great sex life now, and are very intimate with each other. I win, no more thoughts of OW in the bedroom, and I now know how to get what I want, and am lucky to have a spouse and lover that focuses on my pleasure.
Being intimate was achieved through R by other ways than having sex. He held me at night as I fell asleep, he held my hand all the time, we snuggled on the couch. Intimacy became very different in our relationship as a result of all of this, and quite honestly it's much better now than before.