Just read that levsin should be given to a pregnant woman "only if clearly needed". By the sound of that I would not take it if I were you, until pregnancy is over. As far as antibiotics, some are considered safe during pregnancy, some are not:
https://www.mayoclinic.org/hea...egnancy/faq-20058542
You need to be very careful and discuss with your doctors the impact of any potential medication on your unborn child.