we are thinking I am pregnant, not 100% sure yet since I can't remember when I had my period last month. yet I have had the tender breasts, back pains, difference in discharge, and tiredness. we are just waiting for a positive pregnancy test. I took one today will nothing, everything says based on my last period estimate that I still should wait til the end of the week to test. should I keep trying to take a test every day or give it a couple days in between tests?