Allergies yikes!!

Xiomara • I am 27 years old and my husband and I have two beautiful children. Our daughter is 8 and our son is 7. We are TTC baby #3.
Ok so I have really bad allergies to dust and stuff and I normally take an allergy pill everyday but since I found out I'm pregnant the allergy pill hasn't worked. Of course I called my doctor to ask of it was ok to still take it and she said yes but now I'm afraid because my sneezing is getting out of hand. I think in an hour I sneezed like 20 times. Could the pregnancy be affecting my susceptibility to allergens? If so what can I do? I'm miserable!