help me please

I am way too young. I had sex in June. I got my period in June and I had sex on my finishing days. We used a condom and he felt confident. I am really irregular on my period so it isn’t unusual to miss my period. I’m afraid that I’m pregnant because I’ve been putting ideas in my head, my stomach hurts sometimes and I get cramps. I’m way TOOOO afraid to take a pregnancy test. I feel sick but I heard you can give yourself the symptoms if you think about it way too much. Also i haven’t actually thrown up or anything. Please help me try to figure this out. Where should I notice pain if I press down on? Or what should I feel like.

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