Advise

So i was supposed to get my period sunday.. On Saturday night i had light spotting, sunday light spotting again.. Monday i spotted when i first woke up and nothing since.. I did have cramps, i have also been extremely tired, headaches, heart burn.. Today my feet and ankles are swollen.. Sometimes im real hungry and sometimes i want nothin or if i do eat it makes me sick in my belly.. Took a test today and it was negative.. What is goin on?