Could I be pregnant?

Mari
I had sex for the first time ever on November 25 2014. I'm on the pill and he used a condom. But I've since come to realise I was on the placebo pills at the time and he used his teeth to open the condom. My period came a few days later and was light-medium flow. I was due for another period last week and it didn't come at all.
Some 'symptoms' I've been experiencing are: 
-constant tiredness 
-increased urination
-my oral temperature has been a little higher than normal
-headaches
-mild nausea
-mild back pain
I've got a doctors appointment at the end of January so will be asking to be tested of my next period doesn't show up. Just want some opinions.
Thanks

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