I feel like I'm being poked in the uterus with a needle or something. It started at night @ 6dpo, Its now morning @ 9dpo. It comes and goes only lasting about a minute or so each time, and happened about 2-3 times 7 & 8 dpo. Bending down or laying an odd way flares it up. Not painful, I just feel it. I don't have an infection. Could this be implantation? Any insight helps, I'm driving myself crazy thinking that it is implantation.