I got an obvious positive second pink line on a first response test two nights ago. I have another three of the same that were faint positive. Negative tests on mom med and easy at home. I took a test last night and this morning using first response and there is barely a line, I couldn’t see on the one this morning. My period is due in 5 days. Could it be that I’m having a chemical or that my HCG is fluctuating? The most obvious positive test I have was done at night.