Blood with cm almost 10 weeks.

I had brownish discharge last week and mixed with tint of pink , it scared me and went in for an ultrasound to be checked and baby was fine measuring on track at 9 weeks with heart beat 178

Dr told me when placenta takes over , some spotting occurs.

Everything been fine since then until this morning. I used the bathroom few times and no issues but then there was red blood mixed with cm. I tried not to freak out , used bathroom again and nothing.

Should I worry and go in for another check up? My next apt is on Friday.