My period is 2 weeks late, i tested a week ago w a neg. result. is pregnancy still a possibility, if not what could be the problem?

Pregnancy tests: Home pregnancy tests are very accurate. They are the same tests used in a doctors office. They can detect a pregnancy 7-10 days after conception. The best time to take one is when you miss your period. If you doubt the result you can repeat it in 1-2 days. If you were pregnant the hormone level would rise enough for detection.

Hormonal changes: Do another test to be safe. If its negative you probably have some hormonal changes which happen all the time in our body. Stress can effect it too.