Feeling guilty

So I am feeling guilty about waiting to buy baby stuff. I'm 4w1d. I'm 40 years old. Overall a high risk pregnancy because of age and having high blood pressure before I conceived. 
I never had a miscarriage. 2 children (ages 19 and 21). My blood pressure is under control with medication. I plan on waiting until closer to Hallowween before I buy stuff. 
Why am I feeling guilty?