Hello,
A few weeks ago, I started getting a random fluttering sensation under my left breast. It felt like someone was tickling me from the inside, on my rib cage. It came and went again throughout the day and I did not think much of it. I had pulled my back lifting a huge box a few days before it started, and I suspected it was just a simple muscle spasm. The fluttering seemed to go and then a pain started about a week or so ago. It's a slight dull pain in the same place over my left rib cage. My back sometimes hurts too. I am a women on the big side, so I can only assume my back pain is from all the walking I've been doing, but the rib pain is starting to have me wondering. I'm scared to go to the doctors and find out that it's something serious, but if it was nothing, it would have gone by now.