Just a little insight would help.

Mareike
My hubby and I only just the pullout system (even tho we know it's not the most accurate). Anyways, we've been a little reckless and my period is due in three days. Usually I get sensitive nipples and sore breasts 5 days before my period and I get cramps about 3-2 days before my period. I have none of that! I took a pregnancy test a week before my expected period but it was negative. 
What are the odds? I just have a funny feeling about this. I would be ready and happy to be pregnant even thought we haven't officially started to try for one. 
Any advice would help me understand what's happening.