Tweak please? Opinions? 8dpo

Help! 8dpo should I wait and test again closer to af? I feel so sick, breast pain hurts to wear a shirt, body fatiuge (have slept almost all day and still feel tired), no energy at all, headaches , brain fog really bad , insomnia. I truly feel pregnant. I just need that positive test. If anyone will help me I would appreciate it 

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