Could I be pregnant ?

I'm 11 dpo today and here are some of my symptoms - for the past week or more I've had REALLY bad constipation & AF like cramps & backaches - but no spotting or anything. On 7 dpo, I woke up nauseous & dizzy. The next day I was nauseous shortly after waking up also. Both times the nausea only lasted about an hour. Also, about a week ago I began to break out pretty badly on my chest. I've NEVER had body acne or breakouts anywhere besides my face. I haven't switched soaps, perfumes, lotions, etc or anything like that! ALSO MY PERIOD IS DUE IN 2 DAYS.. And I'm having AF like cramps again.. Could I still be pregnant if it feels like I'm getting my period?? 

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