My Dog Has Watery Eyes And A Bad Dry Cough, As If She’s Got Something Stuck In Her Throat, What Can Cause This

She’s coughed like this occasionally, but for the past few days it’s been constant. Her eyes also became watery and r filled with goo. She is eating and doesn’t seem to have lost any energy. I thought about heart worms but the cough is the only symptom she has. Can the cough somehow be related to the alergy that’s causing the watery eyes?