Why is my discharge so heavy?

Im 19 and married I had what was supposed to be my period a week late on may 22 it was very light I had all the symptoms of being pregnant except throwing up only nasea to where I could eat here it is two weeks later I was ovulating on the 567 of june and it hasnt stopped in fact its really heavy and thick... I have to change my underwear twice to three times a day... All my home pregnancy tests were negative... I dont know what to do...