Implantation cramping?

I'm around 5-6 dpo and I've had dull cramps in abdomin and pressure in my lower back. TMI but I've also noticed my cm is thick, clear and gummy, usually at this point in my cycle cm is milky and dry so its a bit strange for me. I've experienced mood swings and was even crying at young Sheldon (TV show) opening credits. Could I be experiencing implantation?

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