Welcome to our little group!
Many of the issues you mention are problems for most people who have hydro. I think that most people would say they have "pains" (for want of a better word) in their abdomen, which are almost certainly from the shunt. Although I must say my pains have always been on the same side, not the opposite side. I can understand when you talk about the tiredness, because I am tired almost all the time too, and become more tired towards the end of the day. I sometimes feel as though I'm in a "fog"

. I have had my shunt almost all my life though, so I can't really compare a 'before' and 'after'.
With any shunt revision it will take time for your body to adjust. A shunt is a foreign body, but the materials used are known to be safe for use in shunts. Quite a lot of research has gone into developing appropriate materials.
I wanted to give you some reassurance, that you are not alone on this "journey", and it is quite normal for you to feel the way you are

.
Nat.