my first pregnancy and Im scared

Annah • PROUD MOTHER OF TWO !! Married to the loml!!! 22 years old!!!
I'm not scared at any thing besides a miscarriage thw babys dad is totally involved and so are both of our families I'm 5 weeks and 4 days and every day I pray not to have a miscarriage I can't go through the emotional distress of losing a baby and I send my heart out to those who have, any one know any signs for me to look out for? Also it's known in my family to have a period in your pregnancy for the first 4 months.. Help?