Period 5 days late

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Hi all! I know the only real way to know I am pregnant is to take a test but I’m not sure if my period is just delayed or I am actually pregnant. My boyfriend thinks I’m just being paranoid but my periods are usually normal and I’ve been getting very mild menstrual-like cramps that come and go as well as in my lower back but those are the only symptoms I’ve experienced so far.

I ovulated on July 27th and we had unprotected sex the day before and the day after. My period was supposed to start on August 10th and still hasn’t come on (August 15th) could I be pregnant? I have creamy white discharge and on and off very mild cramps (usually I have very bad cramps leading up to my period) and have been feeling very drained of energy a lot of regular things I do makes me short of breathe easily. I’m just unsure and don’t want to take a test too early any thoughts??