You are 4 weeks pregnant and just when you wipe have a slight light pink discharge is this common?
This spotting is generally light, lasts for a short duration (a few hours or days), and is not accompanied by any significant pain or cramping. It's caused by the increased blood flow to the cervix and changes in the cervical mucus that occur during early pregnancy.
However, it's important to note that not everyone experiences implantation bleeding, and its absence doesn't necessarily mean that there's any problem with your pregnancy. If you're concerned or have any questions, it's always advisable to consult with your healthcare provider for guidance.