are at home pregnancy tests pretty accurate? I'm 5 weeks today and have taken 5 tests at home, they…

are at home pregnancy tests pretty accurate? I'm 5 weeks today and have taken 5 tests at home, they all came back positive. I have yet to goto the doctor because I am in the process of coming back to the states after being stationed over seas with the military. but I keep reading that sometimes they're not always 100% positive... it has me worried. although I feel like 5 positive tests is pretty accurate.