Unfortunately, it sounds like you have retorn your quadriceps muscle. Muscle tears heal with fibrous scar tissue which is not as elastic as true muscle tissue, and therefore is more subject to retear when subjected to stretch such as a miskick.
For these injuries, a formal physical therapy program which includes stretching, strengthening, modalities, and progression to sports specific functional training, can hasten return to activity, and decrease the chance of reinjury.
Recent work has indicated that injections with platelet rich plasma (PRP) can be very helpful in as part of an overall program for soft tissue healing. PRP is obtained by drawing a small amount of the patients blood, centrifuging it a high speed for up to 15 minutes and harvesting a smaller highly concentrated sample of platelets. The platelets are reinjected into the patients injured area. The PRP serves as a soft tissue scaffold for soft tissue healing. In addition, the PRP delivers concentrated growth factors that can stimulate soft tissue healing.