thanks for your query at HCM
your taking levosiz
m that contain levocetrizine and montelukast
according to USFDA category effect of drugs on pregnancy
both drugs belong to category B
category B means: May be acceptable Either animal studies show no risk but human studies not available or animal showed minor risks and human studies were done and showed no risk.
according to this drugs can be taken as no role in effect on pregnancy was proved
hope i solved your query