Light pink spotting, help!

M • Baby #2 due Aug ‘18
I feel quite scared and nervous because when I wiped after going to the toilet, I saw some pinkish discharge.
I had CP before so I am a little more alert.
I read online that spotting is common... But... Ah (feels like pulling out my hair)
So far no cramps except I had some very light cramp earlier on (almost unnoticeable).
Need some reassurance, or some advice.
Seeing the doctor on Wednesday.