Just started today

Katherine • Pregnant with first baby with my hubby!!
Lately my baby has been really super active and all of a sudden my sleep schedule has changed and the baby is on a different pattern now! Has that ever happened to anyone else? I'm sure nothing is wrong I just had an ultrasound 2 days ago and everything was perfect. Also I'm feeling more wiggles and rolls than I am hard kicks I'm 33+5 days. 
Worried but I'm always worried.