From your description it seems that after bath you developed swimming pool conjunctivitis
later got complicated by ?bacterial conjunctivitis
secondary to contact lens (contact lens keratitis
). With initial medicines your conjunctivitis resolved.
With reuse of contact lens the contact lens keratitis (probably bacterial) re-occurred.
I advice you to discard your contact lenes, use antibiotics 1. fluoroquinalones and 2. aminoglycosides, in a high dose (hourly dose), use glasses for couple of weeks and then plan for the new pair of contact lenses.