It's tough to critique without a video. If you're uncomfortable in the bottom position, you need to do some exercises that isolate that position. A good start would be overhead squats and front squats. I would even suggest pausing in the bottom position for 2-3 seconds each rep.
Also, there may be some mobility issues that are causing that discomfort. For anyone who is brand new to the lifts, I highly recommend that they have a specialized weightlifting coach to help them get started. So if there is no way you can come in to Catalyst before January then just work on getting comfortable in the bottom position, work on mobility and flexibility along with your strength exercises and then we'll be glad to help you out when you come in.