Feeling down :(

Sat here feeling down and depressed, took a test 10 minutes or so ago and it came out negative :( i really thought this was it and id finally see my bfp but nope :( ive been getting so many pregnancy related symptoms, bloating, sore boobs but only if i touch them, feeling sick, constantly tired, cramps, lower back and hip pain, constipation and creamy/milky cm (tmi sorry) af was due 20th according to glow if its negative what the hell is going on?