Currently taking anxiety medicine. whenever i am trying to sleep without medicine say in morning at that moment i suddenly wake up ..or i can say brain wakes me up..i measure with oximeter at that tym spo2 decrease to 91 92..otherwise spo2 is normal..i had covid in april. another situation ..when i try to sleep and i wake up suddenly similar to above situation sometimes my pulse decreases to 47..today it decreased nd then suddenly increased to 110. plz is this common or what test are required.what can i do .plz find solutn to this problem sir🙏🙏🙏