I had two also.
I had the 3 day pill you take one pill if symptoms don't go away you take the second pill on the third day. First time one pill took it away
Second time I had to take both.
Normal in pregnancy..because of all the hormone changes..but if it keeps happening maybe it's vaginosis...which needs an antibiotic..maybe try vagisil pH balance soap...there's other tricks I just can't remember.