I've been having protected sex all the time, and we pour water into the condom to see if there is any leakage all the time and there never was. My period has been 4 days late and ever since the 1-2 day it was late, it been worrying a lot which is maling my heart rate go up. Also, i had a road trip from CA to Las Vegas right before it was suppost to start. could my period be delayed because of too much stress that im putting on myself on thinking i could be pregnant? or is 4 days normal to miss on an expected period. Also, how many days should i start to worry, my last period was 29 days ago. please help, im really worried at the moment