I'd find it hard to believe they weren't connected. However I am not a medic or a physio so can't give you an answer on that- did the original foot issue totally go away? Maybe other muscles took over to compensate for the weakness during that time.
I guess your first port of call would be with your doctor, to try work out whats wrong and if its a tear or a sprain or a break or whatever, then you can work out what to do and a timescale on how long it will take.
What I will say though, is no matter how tempting, wait for it to recover before hitting the ground running- at least give it a good 2 weeks of really laying off and if you are like me and itch to run when you can't, try focusing on non impact stuff like cycling or weights and so on, build up the muscles around the problem area, it may feel like its gone but wait the full 2 weeks because some times things can feel like they are OK but then come back within minutes because in reality they have not fully healed.
Maybe try physio and sports massage but bear in mind most if not all physios will advise rest above all else and wait for the initial pain to go away before working on any treatment.