Injury reoccuring from ten months ago?

About ten months ago I hurt my knee, I think during breast stroke. I saw a doctor and physical therapist for four months to heal it, ultimately it felt better. I was told no breast stroke for a looong time. they never were sure exactly what was wrong because neither ordered an MRI. They said it could be mcl, meniscus, or plica, but that if pt helped I'd be fine. Well, a few days ago I accidentally kicked one breaststroke kick while trying to get back to the surface.Now, my knee hurts again in the exact same place! Could this be from the ONE breaststroke kick or just because I started swimming again? Please, any advice would be great!