Good evening I have such a problem, I feel like there's thick phlegm i…

Good evening I have such a problem, I feel like there's thick phlegm in my throat, I can't swallow it or spit it out, it's constant, and in the evening it starts making me nauseous? I've been suffering for a couple of months, went to Lori, he said to gargle with chamomile, but it didn't help at all, I re-booked an appointment, but it's still a week away, and this feeling is so annoying ?