Advice... AF 2 days late

Me

I've been extremely bloated the past week and also mildly constipated off and on. Usually I have diarrhea before AF. I'm also really nauseous. Today is 2 days late, but I got a BFN with a dollar store test. I had a chemical pregnancy last cycle, so I've been really hesitant to test and am afraid of an early result test.

Tomorrow we are spending Independence Day with family and I was hoping to know one way or another because they'll know something is up if I don't have a drink.

Should I take another $store test in the morning or go buy a free tonight?