It's only human to wonder about the possibilities. When something goes wrong (or right!) it's hard not to think about the what-ifs and want to know the odds.
So, I've created this small set of Frequently Asked Questions for those wondering if they're pregnant. If you have anything to add or ask, please feel free to respond!

Is pulling out a safe method of birth control?
It has a 27% typical-use failure rate, but only a 4% perfect use failure rate. It is not foolproof and is less reliable than other methods of birth control.

How effective are condoms/pills/etc?
Male condoms have a 15% typical-use failure rate (2% perfect use,) while female condoms are much less reliable: 21%/5% failure rate.
The Pill, the Patch, the Ring, and the Shot all fall at about 8% typical-user failure rate, with less than a 1% perfect use failure rate. Most of these methods stop ovulation, which means there is no egg for the sperm to fertilize.
Sterilization and implants all have have a less than 1% chance of failure, both in the typical user and perfect use. But these too have their downfalls.

My breasts are sore, I'm cramping, I'm nauseous in the morning, etc ...
Please take a look at a list of PMS symptoms versus a list of pregnancy symptoms. They are shockingly similar. Though it is indeed possible to have your period during a pregnancy, it is improbable. Periods can be late for many reasons as well, including stressing about whether or not you may be pregnant!

How soon is a home pregnancy test effective?
That information should be given on the box. There are many tests that can detect the pregnancy hormone a week before your next period is about to come.

How can I know for sure?
Only time can tell. If the HRTs come out negative but you're convinced you're pregnant, try a blood test by a doctor.

I hope that this FAQ has helped some posters and that everyone who needs it gets on a reliable birth control soon. And for those of you who are TTC, best of luck