Confused! Imput would be appreciative! 😁👍

So I took a clearblue test and the was a very faint line and was advised to test in a couple days and take again, because it could have been a start of pregnancy or a faulty test. I took another clearblue 3 days later and the line was darker then the first. I was so happy and wanted to check one last time. This time with a first response, it was negative no faint line. Is it possible clearblue gave me 2 faulty tests? (was not in the same package either) I am bummed now and not sure what to think anymore