TMI Pinkish discharge, 8 weeks pregnant

This morning i noticed some pinkish discharge ( pink tinged vaginal discharge) when i wiped. There was no blood in the toilet or on my panties. There is not a slight sign of blood on the pantyliner. I have peed 4 times since then and didn’t notice any color on the toilet paper the second and third time, and some pale pink- vvv faint brownish discharge on 4th time. I don’t have any cramps. What could this be? I haven’t had sex ever since we found out i was pregnant. I haven’t had my first US yet which is scheduled for 18th june. Is this normal? Thanks.

I masturbated yesterday, only clitoral, no vaginal penetration.