pregnant?

Monica • Hi, I`m 30 years old. My husband (32) and I are trying to conceive our 3rd child. We have 2 boys ages 7 and 2.
My husband and I have been trying for over a year to get pregnant. I've been feeling like I might be, late period (but I've always been irregular), 
 nauseous, sore boobs, and peeing a lot more than usual so I decided to take a test and it came back positive. I was shocked because it's not easy for me to get pregnant and I've taken so many tests before that always showed negative. This was a cheap test though so what are the chances of it being a false positive? Might test again to be sure.