Help please

Ok y’all I had sex (almost two weeks ago) the day before what my app said was ovulation day. I went to the dr for my regular exam and she said when your pregnant your cervix can be a blue color and noticed mine was a tint of blue….I’m due for my period on Wednesday I took a test tonight and was negative my question is did I test too early? Should I wait til 15th when I’m due to test again or test again before that? I already have two amazing daughters my issue is that my oldest daughter I didn’t know I was pregnant with until my dr did a blood test due to negative results on home test and my youngest I tested the day I was due for my period and thought it was negative but it was really positive soooo clearly I’m very unsure what to do.