Gail is right. I had the same problems you are having at 8 weeks out and, seven months later, I *still* am having these problems. Probably, in part, because I was not diagnosed as having a swallowing problem as early as I could have been (I thought I was swallowing OK because I was able to take small sips of liquid and that the phlegm problem was separate--but really I was having problems swallowing the phlegm and that could have been diagnosed earlier than it was with a swallowing test).
The earlier a problem like this is attended to, the better chance you have of regaining your swallowing ability. I was way too willing to accept "give it time, it will get better" without further attention from my RO, when I should have raised more of a fuss.
Nelie