Does implantation spotting always occur?

I had a miscarriage last winter. My husband and I have been ttc again for the last 6 months or so. Of course, in the middle of my tww I tend to get super paranoid and start trying to see symptoms everywhere, only to be really disappointed with af shows up. I do not remember having implantation spotting the first time we conceived, so does it always happen? Af is supposed to (hopefully not) make an appearance around Nov 6, and I'm at that point where I am trying to check off symptoms, working myself up (which I know I shouldn't, but cannot seem to help)

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