Hi @Jameela I don't know that any one system works reliably. I think that we keep ourselves very busy trying different combinations in the hope that something will work. In the meantime, our bodies proceed with some sort of healing and adjustment process and things get better on their own.
I do recommend one or two V pillows to wedge yourself up in bed or on the couch to reduce the chances of doing what I do all the time--prop myself up on one arm and use it to move around. Ouch!
If you have a couple of soft cloth bags you can carry over your shoulder take them with you to hospital. They help you manage the drains which can be awkward at night. Sorry if that's too much information. Mxx