Excessive discharge during sex

Patient: Im having very very heavy vaginal white ‘chunky’ discharge that doesn’t smell itch irritate etc what is the cause? ive previously had thrush and its not thrush ive been tested for sti’s all is ok, no odors or change of soaps etc. also I know discharge can be heavier at certain times but this was a lot of discharge more than usual and its putting my boyfriend off. I think ive always had more discharge than the usual person but its getting worse?

Symptoms: Only happens during penetration