Af is late

Af is 10 days late and I have tested since 6 days late with a negative. Past couple days I've been constipated, like I use restroom 1 day and then nothing but urine the next. Then the next day is diarrhea and I have cramps from the constipation. Could I be pregnant and these are symptoms or not and af is around the corner? I'm never usually late either.