My period is due in three days, but why don't I have PMS symptoms???

Okay, so I'm very nervous. I had safe sex about three weeks ago and checked the condom -- nothing leaked. 
usually before my period, I get really, really sore breasts and I bloat, as well as cramping slightly. I get more acne and I get very emotional. However, my period is due in three days and nothing is different about my body. 
But on a side note, I ovulated a week late. The egg white discharge came about a week after eve predicted my fertile period would be. Do you think that means my period has been pushed back? Please help! I've also been having chunky white discharge (thick and sticky) Should I get a pregnancy test or am I just freaking out when my period was pushed back a week?

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