Does this bbt look promising?

Di
I posted this in another forum with a neg test (only 8dpo) and practally everyone said no. I thought this is what your bbt was suppose to do if you're pregnant. Research shows there is rarely an implantation drop. I had my hopes up but apparently I am wrong? Can someone explain to me what your bbt is suppose to look like if you are pregnant then? I'm very confused.

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