High bp at home and at hospital it was normal

So last night i went to L&D because i was feeling dizzy and had high blood pressure at home for 2 days already i used the manual blood pressure thingy so i couldnt prove my numbers being high 😏 so they did blood work and urine tests and took my blood pressure several times every 10 mins and it was totally normal between 110/68 117/72 😏 all they said was that i had some protein in my urine so they are making me do a 24 hr urine collection....  but as soon as i got home and layed down i started feeling weird again and took my blood pressure and it was 161/101 so i got upset because they couldnt detect anything and discharged me even when i told them ive been having it high and that i felt weak, dizzy and had a headache that wouldnt go away... So today i bought a blood pressure wrist cuff that has a memory in it so i can show them my numbers and i took it and it was 137/81.. So hopefully this helps to show them i wasnt lying