brown discharge 3 days after period...pregnant?

ok i dont remember the exact day i ovulated but i had ewcm on july 4th-6th. i bd on the 7th. my period cam but was very different. the first day it was only pink spotting twice then nothing. the next day same thing and picked up at night but still pink and brown with a little red. most times of the day i didnt have to wear anything sometimes i did. but that ended after 4 days of light bleeding and discharge it also had ewcm in it. 4 days after my period i had light brown discharge and it was very strechy but cleary a golden brown color it was only once. any ideas. my preiods are normally heavy and i always have bad cramps this time i hardly noticed any cramps. i also been nauseous , bloating, back ache, earache, veins more visiable , lost of appetite , constipation and diarreha