Stomach and back pain please help!!!!?

For over 24 hours now I've been having really horrible pain in my abdomin and back mostly the muscles and the right side. I've been so exhausted also I keep sleeping hoping it will help but the more I sleep the more I just feel like I haven't slept for days. I've been told it might be appendicitis but I imagine after 24 hours it would be alot worse but its just a constant pain, and Ibuprofen makes it about 90 % better but then it wares off and I feel like I want to die... Does anyone have any idea other than appendictis?!?!