With my son and daughter (15 and 12 years old), I noticed nothing. For this pregnancy, I had an early miscarriage. At 8 dpo, I felt a painful stab on the left side of my uterus, and the next day I had light bleeding. A few days later, a positive test. Unfortunately, it turned into a miscarriage. The next cycle, I got pregnant again... At 6/7 dpo, I felt a sharp stab in my uterus again, and it stayed sensitive all evening. I immediately told my partner, "I think I'm implanting." The next morning, I had some bleeding again. On 9 dpo, I saw a very faint line on the pregnancy test, which quickly got darker every day. On 12 dpo, I had some more bleeding, but luckily no miscarriage.