Do keep checking to make sure it is not something else but you need to remember that your situation was pretty dire when you got to the hospital. Emergency gallbladder surgery is more complicated than the same in a non-emergent situation just like an appendix is safer to take out, recovery quicker, when it is merely badly inflamed versus perforated or about to rupture.
I contracted pneumonia and was in a coma about 21 months ago and the place where they inserted the drain in my lung, between ribs, probably going through muscle, still hurts on a fairly regular basis, nothing major, but I find myself thinking that it has been so long it shouldn't be hurting. I forget that I nearly died and that apparently takes a lot out of you physically, lol.
Our bodies are very complex organisms and more importantly they function as a system. We are so accustomed to our bodies working properly that when they don't we are confused and angry and because of our culture, expect to pop a pill and instantaneously feel better. While the gallbladder is not essential to survival, it does serve a purpose and you must recognize that without it, your life has and will always be different.
The gallbladder stores bile because the liver does not always produce enough to do the digestive work or it produces more than the individual needs at that moment. As we age in general, these organs function less efficiently which is why I have problems now and need to keep Tagamet handy, when in the past the only time I experienced heartburn was during pregnacy.
Again, keep checking to see if there is an unrelated cause to your current situation but recognize that your body is still recovering from this trauma and it is just going to take time. Also, keep a diary of the things you eat and what gives you the most trouble. These are things that you may never really be able to eat again or that you know, if you like them, you are eating at your own risk so-to-speak. If you are going to eat something that will aggravate your system, you can take a product like Tagamet before you eat and that may help to reduce the effects.
At the whopping age of 44, I can no longer eat sweet corn without my stomach going whacko, and lettuce is quickly catching up in terms of the ability to make me horribly ill. Our bodies change over time and we can either roll with the changes, avoiding the things that seem to aggravate our system, or ignoring them and literally suffering with the consequences.
Try to focus on what you can do instead of lamenting the things you are going to have to change; the latter is going to happen anyway and you can either do it gracefully or fighting the inevitable. In addition to the lingering effects of my situation I also have arthritis in my back, scoliosis, and allergies and asthma to contend with. When I get down, I remember that I have no truly debilitating disease that threatens my mobility or other quality of life issues and alive is certainly a heck of a lot better than not being here to raise my children.