Any others with light pink spotting?

Brittedee
Just found out through numerous home pregnancy test I'm expecting number 2. I'm ubber excited and by the chart I should be 4-5 weeks along.
But today I wipped and had light pink spotting and now I'm concerned I never had that in my first pregnancy my doctor only said if it becomes heavy and red go to the ER but didn't tell me what the spotting was 😐