All your comment are excellent and great source of information for patients. I would like to add couple of more points. The stoma guard and a good support belt is the best thing invented and my opinion should be provided for all patients to take home at time of hospital discharge. Ask for a stoma guard. IF the hospital you will have surgery does not carry them does hospital surgeon/doctor can order one one from your pharmacy. .
I now also wear a 45" X65" inch velcro support belt which covers below by breast bone 2 inches past my belly button. IT this is too small you can have cleaners or seamstress sew two belts together for greater support. This sewing of two support belts also helps your lower back a great deal. Many senior people have osteoporosis and the pain is unbearable. . Additionally, I had seamstress cut a hole where needed for the tubing. I have also used a quart or gallon zip lock bag covering the stoma bag area if I am traveling in case of accidents. Often a different stoma design is necessary. Taping zip lock bag against support bet with electrical tape helps. Only have been used on long trips when stoma bag cannot be changed. This make such much easier for me if I am to have am to have leakage.
Velcro support belts ate sold at medical supply stores or amazon. PS> Medicare does not cover support belts of any kind. I also have gone through four of these support belts. Hooks can be sewn on them so velcro doesn't get worn out when adjusting.

The healing ,yes is a process, I changed bags everyday. I understand not everyone can afford them. Check to see if your insurance pays for all necessary bags needed.

My back was extremely painful in addition dealing with my diverticulosis surgery. . I used cbd balm 300 mg on my back and omg it made all the difference. and it certainly helped a great deal along with some Tylenol . CBD does not ABSORB INTO THE BLOOD STREAM affecting any medications you are presently taking.
As far as using the toilet, have friends bring you (if they ask what you need) the bleach./blue toilet tank tablets you put int toilet bowel to disinfect bowel. They help a great deal. Spray with Lysol after emptying bag. I have OCD with cleaning.
Diet is very important. Small meals makes the difference but going slow with smoothies of all kinds, vegetable and fish and fruit does the trick and will not leave you hungry leave you hungry. I supplemented with Ensure and carnation instant chocolate shake mixes, adding 2 tablespoons of protein powder and fruit of your choice. Slowly introduce stewed vegetables and starches. No grains.

Also there are sprays you can use in your bath toilet areas. Plug in Fabreze sent works for me. For women body sprays. Jean Nate works as I believe your bodyPH changes after surgery.

Lastly Please Please be very very careful with what you pick up and bending. WE can easily injure ourselves and not even realize it. . Bring things down from your shelves for easy access. NO bending down for a very long time. IT could be for as long a months or until what date your your doctors instructs. I thought was fine after 4 months post surgery and I decided to go do a little gardening. I use a long arm handle garden pruner/ cutter scissors and cut good size rhododendron branches The story will be short. I gave myself a good size hernia of which I will be having surgery to repair early next month.
I thought I was just gaining weight. until my daughter commented I looked nine months pregnant. Had an appointment with gastro surgeon and hernia was confirmed with a a CT SCAN. So beware anyone even if you feel strong again. Please get clearance to resume physical activity that could further injure your surgery and cause other complications. IT"S just not worth it too early after surgery. Don't take chances until you re totally healed and have built up those muscles. You must heal to resume activity until dr confirms you are ok. Best of luck to all.