Hi lybrate-user as you have mentioned about your earlier diagnosis and treatment ,I would like to suggest you for X-RAY of your foot ,in this way you ll be very much clear whether it is even hair line fracture or not, sometimes yes definitely there is hidden pain
due to hair line crack so better to be cleared. And yes if there is no fracture case at all it might be panic
due to lack of strength so physiotherapy
is must in that case because once there is ligament injury after that strengthening is needed so consult to any good Physiotherapist
and under her observation learn proper strengthening exercises and stretches because stretches can help you to protect from further any injury .And till now precaution is better than cure so try to avoid exertion and don't try to run.