Anyone offer an explanation???

So on Friday (and all the way since the 24th-I've been testing morning and night) I thought I got a very faint pos but ever since, every test I've done has been 100% negative no faints at all. I also mis calculated my cycle and I was actually due the 19th and not the 24th which makes my period 10 days late. My boobs have literally been so sore I havent been able to wear a bra for about a week, I took my kids to a Halloween party at a soft play last night and as soon as I got home I had the dull cramping in my stomach and I said to my husband I bet this is my AF coming after all! But nope still not even a sign of her! I've literally tried every brand of test and when I say every brand I literally mean that lol! Could I be stressing out that much I'm delaying it? (That's what my husband says haha!)