Hi Becca and Welcome !
Dang you have been through the wringer

. I had three foot and ankle surgeries in a 12 month period, it is a hard comeback for sure. I think the Anasthesia itself takes a while to clear.
You have every reason to be tired. Chronic pain is exhausting physically and mentally. Meds can certainly make you a zombie and should be considered as a contributing factor. it can be a real challenge finding the balance between enough help with tolerable side effects.
Has your care team made any conjecture as to why you still have so much pain? Have you had follow up imaging, etc? It seems there can be a reluctance to get follow up MRI, ultrasound after surgeries but you have a new landscape in there and it can be worthwhile as far as getting info.
We all know from experience how hard it is to deal with the kind of loss you have in your life. I was Superwoman before, going all day, working out, Hiking for miles and miles and chasing a boy child around. It is a huge adjustment. Many benefit from therapy during such a time. It made a huge difference in my ability to cope. Depression and anxiety from dealing with the pain and the unknown about where you'll end up can take a toll. Get support if you need it. You have a lot to deal with and untreated depression and anxiety can make pain and fatigue worse.
come when you need support, commiseration or just to vent. Keep after your doctors and don't give up on healing.
Sending Healing Love, Littlepaw