Feeling scared

I do t know why but this time around I am very scared and worried about a miscarriage I have had 3 perfect pregnancy and am on my 4 th baby... I am 7 weeks and 3 days ( have not gone to doctor yet) have apt this coming Tuesday. So my due date could be off I am just going by my last cycle. I feel good today, no sickness or anything .... I do t wanna complain  to much because I know their is forks out there struggling a lot  worse than I.  .... I just hope everything is good