Hello...

I am having a slight issue. My period is a week late, i was supposed to start on the 29th of August and now its the 4th of September. i had unprotected sex on the 24 because i figured it was too far past the normal time i ovulate. i keep getting nauseous, my breasts hurt, headaches every other day and I’m mildly cramping & lower back pain.. but no sign of period at all. i’ve been late before, but never this late. could i be pregnant??