I have a serious pain under my ribcage on the left side. It feels like someone is stabbing me when I take a deep breath and it is uncomfortable to move. I have not had any injuries and it has been going on for about 2 days. Can you please tell me if it is possibly a pulled muscle or could it be something more? I am female and the pain is in my ribcage, closer to my side than to my spine. It feels like I have a baseball sized knot in my ribs. Please help. I can not get in to see my doctor and I would rather not go to the ER if it is not necessary.
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Female , Age: 35