I have a question

Ive been feeling exhausted with headaches and backaches and i was having cramps like a week before my expected period. Well i was supposed to start on the 12th and all i had was odd discharge. . . Sorry. But today around 6 I wiped and it was a light pink color. Usually that doesnt happen it starts heavy. I tested on the 13th and got a negative using first response home test. Should I do another one? Should I save the second one for a couple more days?