As well as getting yourself tested, ask your doctor to run a sperm analysis on your partner also. This is fairly painless for him and may save time in the long run. You will probably find that there is no medical reason for you not becoming pregnant, and it is simply a case of trying and waiting. As I have personally learned, babies come when babies are ready - and not before. The test was negative.
False negatives are common in pregnancy tests taken during the early weeks.
If your period remains a no-show, wait another week and take the test again, and then again if still nothing after another week. Even tests taken at the doctor's office have been known to give false negatives if taken too early. You may experience all of these, or except for the no-show period you may experience none. Each pregnancy is different. Just as each baby is an individual, so is each pregnant woman.