[Kay Monaye]

"Does it necessarily mean you're pregnant if you missed your period"

[Fr_Chuck]

Missing your period is often the first sign of pregnancy, and when you know, if you should test or not. Normally it is best to wait about 2 weeks after missed period to do the home test.
You could go in for a doctors blood test now.

There are other reasons, some women often just miss a month sometime. Stress, diet, change in life style can also make you miss (or for it to be very late)

[ma0641]

Could you be pregnant? Yes. As to the second part Does it necessarily? No. Having unprotected sex? On the pill?

[DoulaLC]

No, you can miss periods for a number of reasons. If there is a possibility of you being pregnant, try a pregnancy test, following the directions carefully.