please someone help

Caitlin • Im 18SO is 20 😘 engaged Christmas eve 2015 (: chemical in may:( 2015
My period is 10 days and counting late. I am not stressed, i am just worried about what could be going on, at like 10 until in the morning i get nauseous, my boobs itch (tmi), umm it hurts to press on a certain side of my lower stomach. can someone help!!