Help help help !!!

rita

I had my period on the 17th of this month and it only lasted for 3days as after the 3rd day my cervical mucus turned white creamy not even stain blood and usually my period so last for 5 to 6 day .the colour of my period is like watermelon since then I've been feeling breast heaviness and swollen legs and shortness of breath I did pregnancy test its negative. what could it be am confused