So confused

So we had an accident where he didnt pull out in time and the next day I ovulated. Well it's now 16dpo and I am having pregnancy symptoms. Nausea, bloating, dizziness, dull cramps and backaches that come and go, fatigue, sore boobs, feeling cold, headaches, food aversions. I have taken two tests not using fmu that were negative. Period due tomorrow. Could I still be pregnant? Or does it just sound like bad PMS?

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