7 days late

I'm 7 days late and I had cramps like I was going to start but when I whipped it was just mucus like I was ovulating but a lot more. And I've actually had a lot of discharge ever since I last ovulated. It's always clear, it was white n thick during ovulation but since then it's been clear n watery. Every time I used Google it said I had a std so I got checked and I'm clean! Now 7 days late so I'm starting to think I need to take a test! Is discharge a sign of pregnancy?