Am I pregnant or paranoid

I'm trying to convince myself that all the symptoms i am experiencing are that of pregnancy. I've been getting period pains on and off since Thursday and it's now Saturday and still no period. My urine smelt weird this morning too and my bust is really tender and painful. When my partner and I were intimate last night, my vagina felt like thick walls around him, is that normal? Am I pregnant or just paranoid 
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