Chance of miscarriage

Hey so I had an ultrasound last week Thursday, I was 7 weeks 1 day, but measuring 6 weeks 1 day, the lady found a strong heart beat of 111 beats per minute and she said everything’s looked very healthy, she mentioned some bruising that may cause some spotting, which happened yesterday for about 30 minutes (light) so I went to the hospital where they did blood and urine tests which came back good, but I am booked in for an ultrasound at the hospital on Friday to make sure that bub is okay… I have had a little spotting today again, around the same time of the day, also haven’t had any lack of symptoms or bad cramping but I’m just stressing and looking for advice . TIA XX