Missed peroid

Nikeitha • HELLO MY NAME IS NIKEITHA AND I`M 25 YEAR`S OLD AND IM A TWIN I HAVE 2 BEAUTIFUL DAUGHTER WHO I LOVE TO DEATH AND I HAVE A WONDERFUL BOYFRIEND WHO I ALSO LOVE TO DEATH
OKAY MY PEROID SUPPOSE STARTING FRIDAY ON THE 19TH BUT IT DON'T COME ON YET AND CAN I BE PREGNANT BUT I JUST HAVE A MISCARRIAGE LAST MONTH SO I'M REALLY SCARY SO WHAT SHOULD I DO NEXT....