Worried mimi high blood pressure and just started period is that bad....?

hi my blood pressure was 110/100 when the nurse took it. Also I was there for a bladder infection because frequent urination, pain when I went pee and chills. I don't suffer doctor phobia alltought I was thinking I had anxiety startle. I just started my period so idk if that the cause but I didn't drink very much water soo what can cause blood pressure to rise??? I am a virgin and 19.