Blood pressure. Level they are normal!

I got stomach upset and weird sensation in body i got scared my heart rate increased to 120bpm then i was thinking i will get heart attack after that i checked blood pressure in fear it is 170/95 then i take blood pressure medication i got sleep just after taking medication then i thought my bp is normal thats why i get sleep after taking medication after that i thought i had to check my blood pressure daily but i when i see the bo machine i got scared and first reading comes 148/90 after that i thought it is not high because i was too scared after that i distract my mind and using phone then further readings while using phone goes down to 130/85 and 125/82 after that if again watching the bp machine and take reading it goes again to 136/88 or 140/90 what is this why i am having this please tell me And i also checked my cholesterol level they are normal