Did I tear my ACL and Meniscus?

Joe, from the sounds of this I would be inclined to agree with the emergency room doctor about the meniscus being torn. That being said if you continue to improve nothing should be done to fix it in the way of surgery. Studies show that doing the repair actually makes things worse in the long run. What I do suggest is that you get to a gym if possible. There do these movements. First warm up the legs by riding a stationary bike for about 5 to 15 minutes with very little resistance on the flywheel. Ride the bike until you break out into a light sweat then start the leg exercises. The way you must do this is to always start with the uninjured leg first. So start with the leg press machine, horizontal one if they have it. Use the uninjured leg first by starting with a weight that is comfortable for you. Do 15 reps and then rest 1 minute. The next set up the weight until it is more of a struggle but still handled well. Do a set of 15 reps and rest 1 minute. The last set is done with a weight that is heavy but one that you can do at least 10 reps under control. Rest for the minute and then do the injured leg. With this leg you are going to start with a weight that is very easy to do and do all 15 reps. Rest for the minute and for the 2nd set attempt something that is slightly heavier as long as you can handle it comfortably to do all of the reps. If you cannot up the weight stay with the starting weight through all the sets. If you could up the weight for the 2nd set then if you can up it on the last set. Again you have to be able to do at least 10 reps on this set. You would do the same method with a knee extension machine and prone knee flexion machine. Do this method at least 3 times a week and the knee should improve.