Has anyone got a negative on one test the used another and got a positive? With my last 2 I got a bunch of false negatives. Its too early for me to actually test right now, my app says I'm ovulating but that could be completely wrong. A few days ago I had period like cramps in my lower back and pelvis, today my boobs are sore and I can't stop peeing, been having more regular hot flushes I think too, got a negative this morning but wondering with these signs whether I should try a different one