talk to your OB first. any medications without your OBs knowledge are a No No.. depende sa kanya. I have allergic rhinitis even before I got pregnant, at mas lumala nung nabuntis ako.. I talke to my OB and before giving me any medications, pinalinis muna nya yung bahay namin, pinapalitan ng linens, pati pillows at naglagay kami ng air purifier. binigyan nya ko ng vit c, salinase spray and cetirizine (pero iyung cetirizine lang ang di ko ininom kasi nakayanan na ng walang gamot) hanggat maari raw sana kung kaya ng walang gamot, wag na i-take.