POSSIBLY PREGNANT...

Ladies who have had children !!!  I think I may be pregnant... My breast are tender around my areolas. My back hurts. I'm constantly nauseated. My cervix area above my v (around my waist) is started to grow firm and poke out more than usual. My head kills me constantly. I could eat anything in sight if it doesn't make me feel sick. My period was late by 3 days and A LOT lighter than normal. Help?!