I like this advice
In general, separating a rib means that you separated the rib from the chostochondral junction (cartilidge) that attaches to your sternum. This is a very painful injury, and unfortunately one in which you really can't change the healing time much. Pain will generally occur with any pressure to the area, and any deep breathing. I am sure you have found out that sneezing and coughing are very unpleasant also. The best thing you can do is wrap the area so your rib cage does not expand too much with breathing. That should help some, but the reality of the injury is that it is very painful. While it will get progressively better, it generally takes 2 to 3 months to heal which is actually longer than if you had fractured them.
If you simply had a rib that was not gliding correctly, a manipulation of the rib could help, however, if you truely separated the ribs, it would be very painful and ill advised.
I wish there was more that you could do, but the best thing you can do is wrap the area, sleep with pillows to avoid rolling on it, and possibly even sleep in a recliner. Iceing can help with pain relief as can the meds you were given. Besides that, it is just going to take time, so hang in there, and know that it will eventually get better.
I strongly recommend against DMSO. If you do use it be sure to get the medical grade. It is five times or so more expensive than the solvent but a little safer. I used DMSO on me and horses years ago. Decided it was too dangerous to use on either one.
My doctor told me not to sweat getting addicted to pain pills if I only took them when I needed them. Seems to be right. I was once a believer in toughing things out. I didn't take any pain med's after they cut one arm three-quarter off at the shoulder because I was told it would heal faster without pain medication. Bad advice and silly to suffer more than we have to.
Getting to the specifics of your injury, soft tissue damage can be more painful and take longer to heal than fractures. Tincture of time is the only thing that is going to work. I would look into supplements, some might speed things a little. I take Glucosomine Chondrotin(SP?) and MSM. Takes awhile to get results but I really notice about a month after I quit taking the supplements things head south.
Heat eases pain far better than ice and helps flush dead cells and garbage out of the area. It also promotes swelling. Ice reduces swelling, seems to usually increase pain for me, I hate ice. If you have the patience 45 minutes ice and 15 minutes heat rotated over and over can be helpful.
Wrapping will ease pain and make it easier to move around. The danger of lung complications seems to indicate only wrapping when you need to move around a good bit and using your breathing toy a lot to be sure your lungs are doing OK.
Anti-inflametories are helpful. Hard to beat large doses of plain aspirin if you can take it. Ibuprofen is my tool of choice these days but I have to take it long term, aspirin is a little rougher on your gizzard long term supposedly.
Wouldn't hurt to have some follow-up X-rays or other pictures taken. Sometimes things are missed in the emergency room or things happen to be laying in place.
The best advice is that which none of us takes, give things some time and have a little patience. Soft tissue heals slow and the more you disturb it while it is trying to heal the more of a mess you make, scar tissue and such, that you will have to deal with the rest of your life. Soft tissue injury, three to six months to be 90-95% if you are lucky, a year or two to reach optimum recovery. Speaking from first hand experience, keep aggravating a soft tissue injury and it can take years if it ever heals.
The doctors, therapists, chiropracters, on and on, failed with me. After they had all had their fun and given up I took over. Were it a horse in the shape I was in I would have sold it for soap or put it out to pasture for six months not doing a thing and then start back slow. The soap factory wasn't interested and I wasn't crazy about that idea anyway so I tried plan "B". I didn't do a thing more than I absolutely had to for six months and then started back very slowly. Worked out just fine and I was back workng for a living in less than a year and in three years or so was about as fit as I have ever been in my life.
Hu