I don’t know what to think...

So I had light spotting on April 14th,15th and 16th. My period was due April 24th. Til this day no period. I’ve taken 2 tests and both came back negative... I’ve been nauseous here and there for the past few weeks... we really want another baby our son is 6yrs old and has been asking for a sibling since this year has started... I really truly believe with all my heart that I will be pregnant soon but dang it when you see only one line... ok I’m done venting... praying for all those who are trying!!!!