most sore throats are not strep and unless your strep throat was confirmed by a lab test we may not be sure that you even had it. if you did it can come back (i don't know what you took for treatment). you may need to have a throat culture to determine the organism causing your symptoms but many will be viral. i do not know your age but mono can cause a severe sore throat and mimic strep so if this is a concern your medical provider should also test you for mono.
i woke up this am with a sore throat after just ending antibiotics this past monday for strep throat. is it returning? . i went into urgent care on saturday the 18 got put on antibiotics for ten days. ended on monday the 27th of this month. woke up this morning with a sore throat.