Quick question on your squats... Are you able to go below parallel? If not, that's one of the first things to work on... There are few, if any, world class lifters that only squat to parallel. The key reasons being, you get very limited transfer through the hips to activate the hamstrings and most importantly the glutes. Second, only squatting to or above parallel only engages the quads. Third, only squatting to or above parallel can exacerbate or cause knee issues as all of the strain is focus on the knee joint. High schools and idiots all over the country coach kids to squat incorrectly every day...
Always, always, squat as deep as you can, and the goal should be well below parallel. That goes for front and back squats. Check out your stance and make sure your feet are a little wider than shoulder-width with knees and toes pointing out slightly. It will take some trial and error to find the sweet spot. This will encourage you to get deeper with less discomfort and also do a better job engaging your hamstrings and glutes. Too narrow a starting position will encourage shallow squats and focus too much of the weight on your quads. Start light (bar) and work up once you are able to get below parallel. If the bar is too heavy use a piece of PVC pipe or a broom stick.
Something lots of folks forget is lifting with appropriate shoes. Get a good pair of olympic lifting shoes, and your lifts will be far more efficient and effective. If you can afford it, try to find a pair of new or used Nike Romeleos 2. These are the best lifting shoes made, and even used ones are usually in excellent condition. If you can't find any Nike 2s in your size, skip the Nike 3s and look at a pair of Nike 4s. My daughters are both accomplished Olympic lifters, and have tried a few different brands of shoes. However, the Nikes are the best. If you can't afford or can't find your size in a Nike 2 or Nike 4, the next best is probably Adidas. Just make sure they're not crossfit or crosstraining shoes. They should be olympic lifting shoes with tall heels for stability in the bottom of your squats and deadlifts.
You don't need a referral to go to a chiro/PT in my experience. Just go in and tell them what you're struggling with and they'll do an evaluation/submit claims to your health insurance.