In some serious pain

Day 4 of attacks of pain in my right side and right shoulder.  The mimic the gallbladder attack pains I had years ago.  My gallbladder was removed in 2005.  It is even worse today.  The pain wakes me up.  Seems to last hours and then stop.  Yesterday, after it stopped I only ate yogurt, fruit and vegies.  I was fine all day, then I decided to eat a taco for dinner and was uncomfortable when I went to bed and woke with this killer pain.  Anyone have any idea what it could be?  My sister said she has had pain like that too (she also had her gallbaldder removed) and she said she found that sugar and fat make it worse.  It hurts even worse when I breathe in.  I am hoping to ride it out long enough for it to stop.  And not eat anything other than fruit, vegies and yogurt. I am going to my friends house tonight.  I will drive my hubby to work and spend the evening there with her until its time to pick hubby up.  So this pain must stop! I do not have a fever.  Ibuprofen doesnt help and heat doesnt help.  The pain is on the right side at the base of my rib cage (like where my gallbladder was) and in the top of my right shoulder feeling like it is shooting downward.