I am currently 37 weeks pregnant and 3 days I am a very healthy 25 year old with no medical

Concerns at all. My first pregnancy was normal. So today was my regular once a week check up with my OB. The nurse checked my blood pressure first and said it was high but that she would let the doctor know and we would recheck after the doctor had seen me and checked my cervix. So everything else was good I am only 1cm dilated and then they rechecked my blood pressure again and it’s up at 154/74 so she sends me to triage labor and delivery and they keep me for a little while and all my blood pressures were normal, labs were normal, urine was normal and they monitored baby boy and he was great. The only thing I did different this morning was drink red raspberry leaf tea with my breakfast which I finished at the office before checking in. Does anyone know if red raspberry leaf tea causes high blood pressure ? Mind you I have been drinking the tea for about two weeks now but not in the morning usually mid afternoon and then one at night and I feel fine. I even felt totally normal this morning when I was at the office and my bp being high. Any clue ?