Pain in ribs. Is this anything serious?

I have discomfort and like slight stabbing pain at the location encircled in the image with red circle sometimes. 2-3 years back when I was hitting the gym, afyer that it will pain sometimes and for that I had shown to doctor that time who wrote it as costocondriotis and gave me rabinaxol D. After eating that the pain would subside. But now, i am not exercising with heavy dumbbells or anything as such. Even if I squat, also while lying down without any exercise i feel discomfort (kind of throbbing pain u can say). Also once at night the pain was so much that i had to try to sleep in different postures and then find an appropriate posture to sleep without pain. Why can this be happening? Is this anything serious? Please help me!