What’s happening

Theresa

so i was supposed to start my period on Thursday and i saw the blood when i was peeing so i’m like “ okay my period came back it’s whatever” then i had nothing on Friday and Saturday (those are my heavier days) and nothing on Sunday and Monday, until i went to go workout and i felt something coming and just thought it was discharge so i looked down at my shorts and there was blood all over. so i went to the bathroom cleaned myself up and went home. now i thought i officially started my period after it was delayed. but today (Tuesday) there was nothing on my pad and no feeling of blood coming out. does anyone know why this is happening? (also i had quite a lot of hot flashes because of my hormones)