Can ejaculation after intercourse cause BV? I have had recurring episodes of this and the only thing I can think causes it to return is sperm.

Here are some... The answer to another question of yours may be applied to the care for the concern in this Q. Clinically, semen would not cause BV, and is your concern based on the symptoms after intercourse? If so, how long do the symptoms last? In such context, one has to consider if the details in and for intercourse may be related with what you felt. More? Follow suggestions and work with doc as advised.