a p-test can turn up negative if you are prego but will never come up positive if you are not prego. so you very well may be prego but your body might not be producing enough of whatever it is that tells the test yes you are. try taking a test in a few more days or a week. it takes about 14 days after the egg is fertilized to show up on a test.
ive taken2 pregnancy test both were negative ive had nausea fatigue and breast leaking now. went off the pill 3wks ago. i have an 11 month old at home and stopped breast feeding last august.