I'm A 29 Year Old Female And There Is A

I'm a 29 year old female and there is a lump under the left side of my rib cage it is painful it sometimes feels like a nasty bruise that you keep pushing on along with sharp pains and occasional numbness and tingling it also feels like it pops in and out from under my ribs sometimes. ive had an Mri, Catscan, X-ray and an Ultrasound but nothing's showing up this is very frustrating and I'm tired of being in pain please help with your advice. I know my body and that there is something going on.