Why don't I feel pregnant?

So I'm not exactly sure how far along I am, I'm thinking in the 4-5 week range. With my last pregnancy, I just felt pregnant. I felt the bloating, cramping, heightened smell, nausea and just the butterflies in my belly feeling. This time around I don't feel anything besides the slight cramping and twinges every now and again and that's it. I don't actually feel pregnant this time and it worries me. My last pregnancy ended in miscarriage and I'm terrified that this one is heading the same way because I'm not feeling anything with it. Is there anyone out there that has experienced the same thing and had positive outcomes? I just feel down and worried. I don't know what I can do to feel better about this.