Soo...idk what's going on

Ka
TTC rainbow baby. This is April and may I've logged everything pretty well did opk and pre seed and bd and af was supose to show on the 18th nada no signs usually I know exactly when af is gunna start and I don't feel it of it my nipple are sensitive more then normal, random nausea I've got like creamy cm and then really thin watery cm so I'm not sure. I've taken test starting the 14th and all negatives took 4 in the past 2 days negatives so idk!! Feels like I'm going crazy