Chances of being pregnant?

Had sex on 14th of April, according to this app It was 11% chance. During my ovulation time my boobs usually get really sore and i have a little bit of cramping but I didn’t this time? My period is supposed to be here May 1st. Is it too early? BTW I did have protected sex and he didn’t finish in me but I’m worried the condom might have ripped ? And precum might have gotten out? Also I’ve been a little nauseous but nothing crazy.

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