Bottom rib pain

[physiobob]

Sounds like most soft tissue injuries to the ribs. Because a lot of musculature attaches to that area it is likely to aggravate it somewhat with running, usually following the run rather than during the run. Unfortunately rib 'sprains' can take 4-6 weeks to heal and there's not a lot you can do for it.

If things don't improve by themselves then it's perhaps worth seeing your local physio to check for any spinal joint that might need some mobilisation to reduce your discomfort. This area often refers pain to the rib and would be implicated along with the rib in rolling from side to side. As for a fracture, well if it feels like it isn't then it probably isn't. In most cases the treatment for a cracked rib is little different. So you might not bother with an x-ray however only a first hand examination could be qualified to make the most informed decision on that. If in doubt there just see your GP.

Best of luck. You can bind the area with a support brace that covers the ribs to ease some of the pain with breathing, more so if it is on the inhale rather than the exhale.