Pregnancy tests left in a hot car- invalid?

Question

Hello, 
I bought a pack of Easy At home pregnancy tests from Amazon. They arrived today, but I made the mistake of keeping the package in a hot car for about 3 hours.  You're supposed to store pregnancy tests at room temperature, and I read online that hot temperatures could make the test invalid.   I tried one this afternoon and got a positive result. I don't think I'm pregnant though.  
Should I through my pack of pregnancy tests away?
Thanks!

Answer

How did this turn out?

Answer

I feel like you could be pregnant! I would take a different brand to be sure but i cant imagine heat could make a test go positive. Only HCG can do that.