Fifth Metatarsal Fracture hurts when running

I would never usually post on a website like this but I'm getting fed up now. I broke my fifth metatarsal 12 weeks ago by rolling on my ankle, pretty sure it was a non-Jones fracture and apparently it was 'minor'. I wore a moonboot for 4 and a half weeks (docs suggested 3-5) and was told to keep most weight off for the first week, and not much on the second. From what I remember, the pain subsided by week 3. After taking my moonboot off and walking in normal shoes it took a while to get the hang of walking again and if I walked for long distances it reeeally hurt. Went to a different a&e at 8 weeks to beg them for an x-ray. The x-ray showed it had started to heal but hadn't completely healed. The docs said something like it 'had healed on the outside but not on the inside'? And just to kind of try and keep off them. It got to about 9/10 weeks and it felt alot better so I went to the gym twice and did only small amounts of running on the treadmill (mostly walking), felt tender and could feel a kind of clicking sensation. My return to the gym was short lived as then I got labyrinthitis so was bedded for a while and then once my symptoms of that wore off I tried the gym again. Went twice last week and on the treadmill tried to not do too much, my foot felt tender or maybe I was just scared to damage it, but felt ok and I finally thought I could get back into my routine! Then last night I went and was on the treadmill for about 20 mins probably about only 30% of the time running though and my foot started to hurt, I stayed on for another 10 minutes. Once I got off I realised I was limping and walked home with pain when I put weight on my foot while walking. Thought I'd sleep it off but was the same today, so went to a&e and got another x-ray (after basically begging again) they said no new injury and the doc said it had basically healed and that I'd just over done it and to not run etc for another 4 weeks!!! Arggghhhhh so frustrating! It's 12 weeks on now, I'm scared that even after another 4, the same happens again! I want to get back to the gym, sick of sitting on my ass, anyone got any advice pleeeeease? Contemplating getting one of those bone growth stimulaters I'm that sick of this!
Thanks

dear Shamoowne
this is the paediatric forum. You are better off asking this question on the musculoskeletal forum
kind regards Esther

Shamooowne, what I would suggest you is to wear appropriate footwear that gives the foot some protection. And for exercises, you must consult a physiotherapist.