hello dear 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 reagrds