In fact, home pregnancy testing kits are incredibly accurate. It's possible to get a false negative which suggests you aren't pregnant if you test very early when your levels of the pregnancy hormone are still quite low, but otherwise a home test is unlikely to be wrong. A false positive - a test result which says you're pregnant when in fact you aren't - is highly unlikely. The only time you can get a positive result when you aren't pregnant is if you've been prescribed HCG injections instead of progesterone as part of fertility treatment. This is not common, and your clinic would have told you and should have explained that it would make a urine test for pregnancy unreliable.
So, if you're sitting looking at a positive test and wondering whether it can possibly be accurate - the answer is yes, it can - yes, you are pregnancy - and, congratulations!
