I have a cold and i've lost my sense of taste and smell. is there any over-the-counter medication i can take that's not to expensive like mucinex (guaifenesin)?

Please see below: If you have a problem to the point you are not able to have sense of taste, its prudent to go to ed.

Depends: If you just lost your ability to smell/taste in the past day or so, use oxymetazoline (afrin) 1 spray each nostril 3x a day followed 10 minutes later by using nasal saline irrigations (sinus rinse or neti poti). Only use the afrin for up to 3 days, saline can be used indefinitely. If your sense of smell is not back in the next 3 days, get checked out.