First of all, Congrats on your BFP!!!
That's great!! Are you a November mom? If so, we have a thread around here somewhere!!
Secondly, your symtoms sound normal to me... as those are the same ones I experienced right after I found out I am preggo. The cramping went away, but the sore breasts have continued for me... hehe.. so much fun!
This is my first pregnancy too... and like you, I have a million questions. My recommendation would be to get the book "What to Expect When you are Expecting". I bought this a few days ago and it has been VERY helpful for all of my questions. And of course you can ask your doctor too.
Good luck with everything... I hope your Dr. Appt. goes well!!!