Fundal height and heart rate...

I’m 24 weeks and just had my prenatal appointment yesterday with a different doctor in the same office than I usually see. I noticed this morning that my fundal height was measuring 3 weeks behind. The doctor didn’t mention anything but I decided to call this morning anyways and make sure it’s normal! Just wondering if anyone has experienced this and if it’s a cause of concern? The other thing I noticed was my baby girls heart rate is usually always between 150-165 and yesterday is was 134. I’m sure heart rates can fluctuate so I’m trying not to be worried over nothing!! 🤦🏻‍♀️

I’m waiting for the nurse to call back...