Late implantation?

I had vvvvvfl on my test yesterday and today it has slightly gotten darker. I noticed a speck of blood when I wiped and I am around 10dpo because I think I ovulated one to two days later I believe. I am 2 days from af and have been having pinching and pulling in my lower stomach yesterday I had af like cramps all day long. It stopped this morning and are coming and going. I was wondering if this is a good sign?