You can relax. It is normal not to hear from your son for a few weeks. If your son got to Boot Camp Aug 21 he has not had time to write you yet. The first week to ten days are processing days. They are getting shots, seeing the dentist and allot of paperwork. He will not be able to call you again for several weeks. If he does real well you might hear from in another 2-3 weeks by phone. He can only write letters on Sundays and he also has to do allot of other things that day e.g. ironing, cleaning, washing clothes and so on, along with studying and possibly being on watch. That first Sunday was probably too busy to write and I suspect that you will get a letter soon. My son and daughter both went through Navy Boot Camp this year so I know where you are coming from.
No news is good news. :) If your son got in trouble you would hear from him right away. Then they have to call home to tell you that they are being kicked out. Both of my kids said that.
Don't worry about the PT part. We didn't think either of our kids would be able to do it and they both made it through just fine. They both love the Navy now. If you sign the guestbook again and leave your e-mail address and put a check mark in private we will e-mail you directly with our e-mail address and phone number. Then you can also call us and my wife and I would be happy to talk to you.