stress fracture?

I've get heart palpitations a lot, espicially after i exercise and I'm starting to get injured more frequently. I think i have a stress fracture on my left foot kind of under the big toe (ball of the foot) that hasn't gone away since last November. Not only that, but on the top of my left foot when i flex it hurts and it might be another stress fracture so i'm told, and a left leg pain-i don't know if it's a shin splint because it's higher up, but it hurts when i run on it. Then on my right foot, on top all those little bones at the base hurt, and the same thing is happening to my right as my left-where it hurts on the ball. I don't know what to do. I do cross country, which is now turned into track season, and i'm 16 yrs. of age female. For some reason, last week i felt tired, and i slowed down a little on the hard runs than normally. I don't feel like doing it anymore, but i have to. I just don't know what to do about the heart palpitations, and injuries. Is taping them everyday ok? I have a first track meet (well practice track meet) february 11. I'm trying to ride my bike on weekends, but i feel like it's not as effective as running. And i seem to go into oxygen debt fairly quicky, though i'm not overweight, and i've done sports all my life. How should i go about solving all these problems? (and my mom doesn't care to take me to the doc now-no time) so please tell me how to deal with this on my own w/help of my coaches, without taking a lot of time off. I cannot stop running-even though i may be sick of it a little, i still have to and want to do it.
Allie

[Yena H Do, DPM]

you need to go to the doctor.  it is not normal for a 16 year old non-obese female to be out of breath when running.  you may have a heart condition that is causing this.
as far as your feet/legs...you need to see a podiatrist and have xrays performed.  if you have a stress fracture, you have to offload your feet to allow healing.  otherwise, you delay the healing process and you will have chronic pain until this is treated.
my main concern now is your inability to breath well after exercise.  please tell your mother the importance of going to have this checked.