Thanks so much Peekawho!! I called the Dr. and he said basically the same thing. Got a test, it was negative. Bought 2 so I could test again in a week. THANKS SOOOO MUCH. I figure my system is a little shocked by the whole ordeal and mega doses of antibiotics. Too funny is that my IV sites still hurt 3 weeks later! I guess the IV meds did a number on me!
If you were ovulating shortly before the tubal and had sex, that's the only way I can see you would possibly have conceived. If you conceived right around then...3 weeks ago, then a pregnancy test done now should be accurate.
Tubals have a failure rate of approx 1/100 to 1/150. So its not entirely impossible for you to fall pregnant, just EXTREMELY, extremely unlikely.
The most likely scenario is that for some reason, you got your period 10/5. Look for it again at the appropriate time in Nov. If you are worried about pregnancy, test now and again in a week.