HVAC system only blows hot air?

Hi there. I have the vehicle listed above Wolfsburg Edition TSI 1.8. My car's A/C and heater were working fine until this winter when I decided to use the heater. While the heater was on, I drove over a deep pothole on the road. I hit it pretty hard, but all seemed okay and I continued on my way.
The next day I broke a sweat after washing my vehicle and decided I wanted to use the air conditioning. After turning the temp knob to the cold position and pressing the A/C button on, I noticed the air did not get cold at all and no matter which way I turn the temp knob the air temp is all the same, HOT! Even when the system is off, I can still feel heat coming from the vents.
A new ac compressor was installed about 2 years ago and the car was not driven much after doing so. I verified that the compressor is working and the A/C system was charged and working fine before I hit the pothole.
Could it be possible that the blend door is stuck in the heat position? How would I check to find out if it's a stuck door or if I need a new blend door actuator? Also, I read about recalibrating the HVAC system to make it work. Is that something I could do on my make and model? I have three knobs to control my HVAC system, Temperature Knob, Air Pressure, and Direction of air flow through the vents.
Any advice would be greatly appreciated. Thank you!