Is There Any Home Remedies For Preventing Tightness Near Tonsils?

Within the last 24 hours, my throat feels as though it is tightening up right near my tonsils, not struggling to breathe too much, but it's all I can focus on, and the more I focus, the harder it becomes, or the more I focus, the more it becomes tighter. No pain. Nothing seems visually wrong near tonsil area. But it is really worrying. I have no trouble talking, eating or drinking although I feel the need to take deep breaths every once in a while, sometimes the breaths are satisfying. I'm not coughing up mucus or anything, or coughing at all for that matter. I'm 15 years old, female, and I just really need a possible, doesn't have to be definite, diagnosis before I ask my mum to book me a doctors appointment. I spoke on the phone with a nurse from the NHS (National Health Service) and she said it's probably just to do with anxiety and I need to distract myself. I just really need a second opinion, if there are any home remedies, like drinking more water or going out to get more fresh air. If it helps, I am currently on my period, just in case it has anything to do with that. Also, if this is helpful, I don't feel nauseous, nor do I have any health problems apart from the fact I am Vitamin D deficient, and I take Vitamin D tablets. The tightening sensation hasn't gotten any worse or better within the last 24 hours.