Pregnant?

Be
I know the only way to know for sure are blood and urine tests but this is KILLING me. 
So during ovulation we had sex, and this was almost a week ago. In the days since I had a little bit of spotting, different CM (like white and thick, TMI I know, but I don't know what it means), cramping and my breasts were more sore. I still haven't gotten my period, since it's due in a week. Though with my last pregnancy I got a positive test before my missed period. 
My son is only three months old, and while I wanted one more relatively quickly, I didn't mean THIS quickly!
 
Thoughts?

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