I'm Having Consistent Pain In My Left Side (rib Cage

I'm having consistent pain in my left side (rib cage area) which is radiating toward the front. I was in a mild car accident on April 22 where I was rear ended and sustain pain in my lower back related to the impact which causes me to have back spasms. I don't think this is related to that. I am a healthy & fit 43 year old woman. I have not done anything that would have caused pain like this. No falls or incidents. My symptoms include tenderness to touch, nausea, pain on side, pain with deep breaths. decreased appetite.