I think you are still suffering some trauma symptoms and associating your partner with the pain of the injury he accidentally caused you.
By avoiding your partner your brain hopes to avoid incidents that risk further injuries.
Are you getting enough vitamins & sleep?
Remember that prescribed painkillers for your injury can also make you feel more depressed, bad tempered and prone to angry outbursts/mood swings.
Your partner knows you best, has a central role to play in your recovery and is probably feeling terrible for hurting you.
You and your partner need to talk about what direction you each see the relationship progressing in.
So you both know where you stand and understand what each of you want.
Maybe with the help of a friend who knows you both, can give you an independent viewpoint and has never been sexually involved with either of you.
Or a professional relationship counselor, who has a lot of experience helping couples improve their relationship and will ensure that discussions always stay calm.
Hobbies can play a significant role in helping to improve mental health and decrease the severity of depressive episodes.
Have you considered devoting more time to your creative interests?
Maybe taking an art or photography course, to widen your portfolio and skillset.
There are plenty of online and part time courses.
I'm looking into one learning about digital illustration.
I paint and do photography already.