Oh my goodness, I hope you'll be able to sleep tonight and walk tomorrow. You've been doing way too much at PT for a baby knee that is only less than 5 weeks old. Weights should not be used for at least 3 months. Our members have found that doing them early like you are kept the inflammation, pain and swelling levels up. All you need to be working on is letting that knee heal. Exercises won't do that. Using your knee in your normal, gentle daily activities is enough to rehab it.
Treat your knee like an infant because that is what it is! You are barely 1/12 of the way healed. Listen to your knee. If it has more pain and swelling then what you are doing is causing a setback. You want to get that pain and swelling down, not increasing it!