pain after appendix surgery

I am 24 years old and i had my appendix removed six months ago from the large 6cm incision instead of the small keyhole procedure,
It took three weeks for me to heal enough that i could sit and stand without help, though the pain never went away completely.
I have dull pain at the site of the surgery, it's constant and noticable.When i cough,have a bowel movement,sneeze etc. anything that strains those musscles i feel intense pain.I can no longer sleep on my side because of the uncomfortable pressure i feel in my abdomen.Also Once a month my stomache will swell as if i am 7 month's pregnant and will last for a week sometime's more.My bladder seem's smaller to me now because i am waking every 2 hours to use the bathroom where as before i could go all night and not even need to use the bathroom in the morning untill i had coffee.
The doc's say all is well and there are no complication's.The more i reasearch this topic the more i find that so many other's are going thru the same thing as i am with this surgery.Six month's and i still can't even graze the scar without a painful nerve shock, well that's the best way i now to explain what it feel's like.
Other symptoms since surgery:
Back pain
Chest pain
Rapid heart beat
numbness at incision site
pinching sensation at incision sit when sitting

I don't think doctor's are willing to admit that this so called "simple procedure' is more complicated than originally believed.
It has changed my entire lifestyle in a negative way and i am left with no answer's, only question's.