Is this normal?

Je

I had my ultrasound done again today. 1st ultrasound Dr said I was measuring 4-5w (lmp 6w) baby now measures 6w 1d (lmp 7w 3d) heartbeat 111. Is that normal? for heartbeat to be 111? everyones posts I've seen are 140 and up...just worried...tia. dr said I have to go back in 2 weeks. I thought people only go back once a month or will I be seen more often due to being a high risk ( shortening cervix, premature labor in previous pregnancies and funneling) I was told I would get cerclage at 12-14 weeks. this is my first time finding out early in pregnant I usually don't know till I'm 5 months pregnant.