Michelle and Jim Bob Duggar, stars of TLC’s ’19 Kids and Counting,’ will have to change the title of their reality show again this spring. The couple is expecting an April birth date for their 20th child.

“We are so excited,” says Michelle, 45, who just entered her second trimester. “I feel good. I am past the sickness stage now.”

The Tontitown, AK parents already have 19 children, all with first names starting with the letter J, and are two-time grandparents.

Their youngest child Josie was born in December of 2009 at only 25 weeks, weighing less than two pounds. But after some initial health scares, she’s now developing normally.

“It is a miracle. Josie is the most energetic, busy little almost-2-year-old,” says Michelle. “She is short, and yet she can keep up with the big girls and she thinks she is just as big as they are. We are amazed at what she can do.”

[PEOPLE]