I'm about a month and 6 days late for my period, and I'm starting to get really worried. I've been feeling nauseous, my nipples are sore, and I'm a lot more sensitive to smells than usual. I've taken a home pregnancy test three times now, but each time, the test line shows up faint. The faint line appears less than 23 minutes after the urine flows onto the test pad. I'm really anxious about whether I might be pregnant or not. Could you help me understand what's going on?