Hi, sorry to hear you have had these problems. 
I had my mastectomy and reconstruction 14 weeks ago. The wound on my tummy is very large, it looks like a smile with two big cheeks at each side. It goes all the way across. It’s still very uncomfortable, I massage oil into it every day. But if I bump my tummy on anything it is painful. The breast healed really well, other than being smaller and having a flap of skin where my nipple was it ok. Again I have to massage it every day to reduce the bumpiness of the fat tissue. I have problems with my right hip and  leg due to the pulling through of the vein and the mesh. I had a ct scan this week to see what is happening. My surgeon said in 5 years time people with this operation tend to be happiest with the result. I keep that in my mind as it’s been pretty tough getting back to being able to walk my dog and this week I managed to ride horse for the first time. I am very lucky to have had a good family and friend network around me to help out. I had a blood clot in my arm which meant painful injections for 30 days into my thighs. These actually made me cry sometimes as they were so painful. 
I am on a Facebook group for horse riders with breast cancer. Many of them are opting to go flat. I can understand why as this has been a very big operation with a long recovery time. On the bright side I now have a flat tummy and I can fit in clothes from 6 years ago before I developed the menopause belly fat. 
Wishing you well. Suzie x