Need advice please! πŸ€·πŸΌβ€β™€οΈ

ok guys i need all the advice, help, and answers i can get! my significant other and I had sex yesterday morning well hours later after supper i started bleeding but my period is NOT suppose to come for like another 5 days now so it has me wondering if its my period or maybe something different like a miscarriage only because i do not use any type of birth control nor do we use protection because we in no way are trying to prevent getting pregnant we would like to conceive and have been tracking my ovulation and cycle when my chances of pregnancy is highest and when its at the lowest so we want a baby and me starting to bleed is such a downer because we wanted mother nature to not visit but what has me dumb founded is my cycle is a week early almost and ive been cramping and hurting and i just about never have menstrual cramps anyways! what is ya'lls thoughts on this.