Womdering if its my period

Veronica • Proud single Momma of 2
So ive been a bit crampy for the last couple of days. I dont get cramps everytime i start my period anf when i do theyre just bad cramps but now my cramps feel like a have to go #2 and my back hurts. I still havnt gotten a period. But today when i went to the bathroom that i wiped i saw a lil bit a blood and the color was like a light pink lemonade. When i went again a while later there was no more blood. Wondering if its the start of my period or implantation bleeding. Iv felt nausous for a couple of days already and been craving soda like crazy. Any thoughts ladies???