Sudden temp spike. Good sign for implantation?

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I thought from your chart, and especially where your temperature has only just risen, that you were maximum 2 DPO as you do not have 3 consecutive temperatures indicating a clear thermal shift. Your chart is rather erratic temperature-wise, so it is very difficult to have a clear idea of when you ovulated.
A clear thermal shift will look more like this:

However, as both myself and Sarah stated, a rise in temperature unfortunately does not indicate pregnancy. In some cases, some women may have an "Implantation Dip", however, as you can see from the chart about, it does not increase your chances of having a positive test. 
Sometimes when we want something really badly, we see loads of signs that give us hope that the thing we desperately want is just around the corner. Unfortunately, with pregnancy, you have the exact same hormones (apart from hCG) as you would if you had your period.
Hope your journey is swift and happy 😊

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Implantation doesn't happen until 5-12 DPO, so you wouldn't see it yet. You are still at the stage where you need consistently high temps to confirm ovulation.
Sometimes Implantation can be seen on a BBT chart, if it is seen, then you usually get what is called an "Implantation Dip" - a one off slight dip in temperature due to your changing hormones (progesterone).
Hopefully this is your month though 😊

Answer

Spikes don't indicate implantation

Sudden temp spike. Good sign for implantation?

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