Can the body be stuck in a state during practice?

So I've been doing vipassana meditation more regularly after my second 10 day regularly. I try to do 1hr to 1.5 hr per sitting and meditate as much as possible during my commute. I've been feeling many more sensations lately as well as having a deeper feeling for where they reach in my body. I've also had strong emotions regularly coming up and I've had some things that have been happening as well. I try my absolute best to be equanimous but at times during my meditation my body will automatically tense up And twitch. My main concern is my neck / throat area. Lately when I swallow, I don't feel a bump per say but I feel a spot of tightness which even feels like a ridge that I have to get over when I swallow sometimes. It only happens sometimes. I've been feeling a ton of tightness in my neck and I've never felt this before since the neck sensations are fairly new. Could it be that something is arising which is causing a shift in the state of my body like increased neck tightness and constriction? Generally after meditation this feeling gets much better so I'm not sure if it's a sort of transitioning state. I'm not sure. Saw a doctor and they couldn't find anything after feeling my neck. I don't smoke. I am active and a healthy weight.