Wellll....

Jana
So my fiancé swears up and down that I'm pregnant.
I didn't think about it until he said this but it would explain a lot!!!
-breasts are swollen, extreme fatigue, increased appetite, he says I've been moody, I'm having night sweats, increased discharge, slight pica ( I wanted to eat the downy unstoppables), increase in flatulance, dizziness and fainting, headaches lasting days, increased heart rate and also hiccups when I rarely have these. 
We have been using the withdrawal method and my last period came 4 days early and only lasted 3 days and the entire time it was a dark color blood and it wasn't even like my normal periods. I'm fairly regular.. 
How likely is it to get pregnant with this method? Seeing as with the pull out method he's not ejaculating in me. 
Has anyone on here gotten pregnant while using this method?