How long does a biophysical Ultra sound last ?

Just want some peace of mind.. if anyone here can throw some light .. Due to previous late loss in pregnancy I am checked every week this time as my 3rd trimester has started .. today I was checked by an intern and I don’t know why but I wasn’t comfortable .. she pressed harder and stayed at one place for so long .. usually the technician finishes the check in 15 min .. she took almost 45 min and I was dizzy lying on my back .. even the baby didn’t like it.. the baby was kicking like crazy and I never felt like this before .. and she took her own sweet time exploring my womb .. is it ok to do all that.?? She was sweet and evrerything but still I worry more about my baby then anything else .. I am just a very anxious and worried mama and every small thing makes me worry so much..

pls no judgements just need someone to understand my mental situation here