He's frustrated, I'm frustrated! (Sex and mental health)

Help! We are both totally frustrated. We have been TTC for 5 months. 3 months ago my DH was injured at work and he has been out on leave.

They put him on pain meds/muscle relaxers while he goes through physical therapy and gets and MRI. While he has been out on leave he has been working on addressing some other health issues (depression/anxiety) that he has been ignoring for quite some time. In addition to going to therapy his doc prescribed him an antidepressant

We have been together 8 years and never had intimacy issues..... until recently

Suddenly he isn't turned on as easily and he doesn't stay turned on. I have asked about masturbating and he says that's not a problem. Which of course leads me to feel like it must have to do with me

But I also can't help thinking maybe it's related to the new meds he has started taking. I looked up side effects and didn't see anything like this listed. This would be frustrating anytime but especially now when we are TTC.

Would love any insight if anyone has been through this. I just want to get back to us... and the fun hot sex we used to have.