Help with congestion and dry mouth?

So the past two weeks I been having a really dry mouth and my nose is congestion. It's making it hard to breathe and swallow and allergy Meds make it worse . I drink tons and tons of water and it helps but not much and I chew gum and still don't work the best . I don't know what to do at this point and I'm getting sick of this . I've had allergies before but never nothing compared to this and I really don't think it's alleriges at this point . Can anyone help??