Don't worry, you'll have a stash before you know it. I started last summer with a firm no-stash policy and only one project at a time. In the last year, I went from only one project at a time, no extra fabric to where did all this come from. I have one quilt I am hand quilting, one row robin to work, a quilt to bind that my mom made, one quilt ready to sandwich, a bin full of 30's fabrics that I buy in 1 yard pieces to stock up for a future GFG and two other bins full of fabric I have found at unbelievable low prices so started purchasing. I like scrappy quilts so buying FQs or Charms on sale has been a great stash builder.
So much for one project at a time and no stash.