Hi - I was hugely swollen after one of mine . . . they sometimes flood your pelvic cavity with fluid after they have finished the op to prevent adhesions so this can make it extra bloated. The fluid is absorbed over the course of a week or two. It is quite normal to have a swollen tummy. My first one took 3 - 4 weeks before I felt I was getting back to normal.
The pain you get in your shoulder is due to the gas they use during the op to inflate things giving them better access and sight. This too will dissipate, usually over the first week.
The more you can spend time up and about, the quicker it will disperse, although be guided by how your body feels and if you need to rest / sleep then do so.
This also applies to getting your bowels moving again. The anaesthetic will have temporarily slowed everything down and dried your system out so it needs fluids to be replenished and movement to get going again. If you are taking anything in the codeine family as a painkiller, this is also known for contributing towards constipation.
Plenty of fluids, some tinned apricots, lactulose on hand if things don't get going but also important to send sometime upright if not too painful as will help things get going. Post op constipation can be an issue if you are not expecting it and not prepared. I ended up in terrible pain and thought it was due to the op but it was simply because of the painkillers, anaesthetic and my relative lack of movement which had caused constipation.
I wish you well for your recovery. x x