I am scared

So I found out I'm expecting according to the calculations I'm 5 weeks 1 day....I'm excited, I don't feel that pregnant tho..I have sore/ itchy breasts/ nipples, sometimes a little sick in the tummy!!

BUT...

I'm terrified at the same time, I had a miscarriage back on April 12th..and I'm scared that im going to miscarry again..

Has anyone been like that?!