Is spotting normal

Anu • had 2 miscarriage before , Now due with rainbow 🌈 baby in Oct 2018

Hi

I have question for people who have experienced this.

Its my first pregnancy

I see small portion of brown spotting since my 3 day of missed period and today its been 5 day.

And am 5 weeks pregnant.

My doctor suggested me to go for ultra sound in two weeks to see if everything is ok.

Is spotting normal

If so many days it does happen

Plz help me guys