Day 40 and no period, but had all the signs

I have usually a consistent cycle at about 38 days every month and have been for about 6 months. this month I had a lot of cervical mucus around day 14 which I typically always get and I assume that’s me ovulating. I don’t take a test or anything so I can’t say forsure but I just always have it around same time for a few days. anyway, I took a pregnancy test to check to ease my mind and it was negative. tomorrow will be day 40 which will be the longest it’s ever been. I’m stressed and not sure what’s going on. please help me ease my mind