You gotta rest it. i've had tendonitis before and the pain won't stop until you do.

It will be from overuse. Your doctor will be right. Im assuming you are a teenager still and therefore VJB will be too intense even if you don't feel it it is. These jump programmes are intended for adults with fully developed muscle systems and you need to give them respect. If you go about doing it again make it easier you will still see gains and you are less liekly to get an injury