Hb 135 bpm at 6 w 3 days

Today I’m 8 w 4 days .... we saw the HB at 6 w4 days and doc said it’s strong. Is 135bpm good?? Next ultrasound is this Friday when I’ll be 9 weeks... could use some prayers. Had a mmc in December when we found out there was no HB at 9 weeks. I haven’t really had any pregnancy symptoms which has me concerned ...just praying this little bean sticks and that all goes well Friday. 💗