Nervous

I already have two children and being unaware of the miracle of life at a young age you just go through pregnancy with your eyes closed. However, being older and knowing my body more as a woman I'm more observant of everything and I never knew I would be so nervous to let the days go by without thinking is the baby okay because I don't feel anything. Maybe it's all these topics of women who had miscarriages but I've never so I should be less nervous. Am I crazy because I'm more observant of everything as an older woman now? I'm 4 week 5 days...