My blood pressure was 96/60 today .... Whats athletic bp ?

i am a 23 year old female, around 110 lbs and 5 feet 3 inches ... All throughout life, my bp has been around 110/80 and i was told its normal ... I am mesntruating today and the flow was kinda heavy but i do drink around 5 litres of water everyday with other electrolyte and juice support ... I am not weak and symptomless but my bp was soooo low ... Is something wrong with me now ????