Some background: 20 year old male, not competing for my university but still running regularly and hoping to be semi-competitive in road races. Hitting around 55-60 mpw when healthy.
Last July I started having pain in my fourth metatarsal, right under the ball of my foot. I have had two sesamoid stress fractures in high school and the pain felt more or less the same, just in a slightly different spot. I was coming back from a few weeks off for a minor lower back injury and had built up to 40 mpw easy running mostly on grass trails. Two days before the pain started I did a road time trial effort for a virtual race which may have been a shock to the system and contributed to the injury.
My podiatrist (the same one who found the stress fractures before) diagnosed it as a neuroma and gave me a cortisone injection. The pain stopped after four weeks of no running, but started again when I got up to 25 mpw in late September. My podiatrist still claimed it was a neuroma and offered metatarsal pads. Got an MRI anyways in early November, the results of which "suggested stress fractures" because of marrow edema in the third and fourth metatarsals and didn't show any soft tissue masses.
I wore a boot for two months but started having the same pain again before even attempting to run. Put the boot back on for three weeks which seemed to have helped. Started running again four weeks ago, going every other day and gradually progressing from five minutes to twelve minutes of jogging on grass (with walk breaks). Two weeks ago the pain started again after running and hasn't improved with rest. Still feels swollen and hurts whenever I walk just as much as before the MRI.
Has anyone here experienced anything similar? Is it possible that a metatarsal stress fracture would take this long to heal, or that I actually had a neuroma the entire time? I'm confused and would prefer not to shell out more money for another MRI.