throat cancer?

i am starting to get really worried. my swallowing over the past couple months is hard. i had an endoscopy in october of 2018 so almost 15 months ago and there was issues. But i do have acid reflux and i am on medication for that. i do have moderate sinusitis and post nasal drip. So i am worried it might be throat cancer or something else, any ideas?

2017-04-11T00:37:33.809Z