If the doctor says you are AOK, then just keep it up and you will get in better and better shape. Then you will be more fit and strong and able to keep up.
It's a great sign that you are improving after only 6 weeks. You have to push yourself to get into good shape. It gets easier the more fit you are.
Trip to the doctor is the first step. If O.K. with the doctor, talk to your coach and talk to him about your experience. What he sounds like he is doing is trying to provide you with an aerobic jogging workout to improve the heart muscule capabilities in addition to overall condition for your basketball games. Because of your heart rate, you may be going into anerobic levels. The key: Communicate with your doctor and your coach.
hi - a trip to the dr wouldn't hurt and would certainly give you piece of mind. you could also describe the level of training and see if he or she thinks it's too much.