Possibly pregnant and scared

Camille • 20 years old with a 8 month old daughter #normalizebreastfeeding
Hi I'm Camille I'm 18 years old and I'm scared that I might possibly be pregnant. I have no idea how to tell my parents. I was supposed to start my period 4 days ago and I'm never this late on my period. My boyfriend and I had sex before Monday and now I'm late. I know how my parents are and I'm super scared. I will be taking pregnancy tests around tuesday or Wednesday What should I do?!