There would be times that I would find sex with Fibromyalgia to be painful. It would depend on just what I was feeling at the time. Pain comes and goes and so do the other symptoms. You would and should talk with your partner about what you are feeling emotionally and physically as well. In some cases it may not be possible depending on how bad your Fibromyalgia is and some people are certainly worse and in more pain than others. The rougher the sex the more exhausted you might end up being. Just take it slow and easy and talk your partner through it. If they’re understanding they will work with you to make the experience a good one.
Advocate for mental health and invisible illnesses, also a devout Christian