Whats up with my test?

i took one test last night, and another this morning, one was a first response and another was answer. both tests did this. i would see a faint positive start to develop, the line was fairly obvious, then it would disappear, and i cant tell if i see something or not! this would happen in probably a minute or so after i peed on it. could these be faulty tests, or could they just be crazy positives? we have been trying for 10 months for a baby...so we would be happy. we did decide if it didnt happen this time we would give it a rest, so im nervous to know! period is due tomorrow as well