Trent and Lindsay Had Vaginal Sex a Few Times Before

Trent and Lindsay had vaginal sex a few times before Trent told Lindsay he has been diagnosed with chlamydia. Lindsay, who has not noticed any symptoms that she is ill, just discovered she is three months pregnant. Lindsay should:

A) not worry because she has no symptoms, and the large majority of women with chlamydia have noticeable symptoms.
B) not worry because chlamydia is primarily transmitted through anal sex.
C) be very concerned because chlamydia cannot be treated by any currently available methods.
D) be concerned, in part because chlamydia could cause complications for her unborn child.