Isla, Demi, Alyse and Milla arrived 12 weeks early in March and are sisters to Darcie, four.
She says: “I look at each of them and I get butterflies in my tummy thinking: ‘Wow, I’ve got four babies and I love them so much’.
“It’s a constant job and I never get five spare minutes to myself.”
In fact, Carla admits she and builder husband Paul, 43 are so sleep deprived, they haven’t shared their marital bed for months.
Carla explains: “My sister looked after the children for the night so we could go out for dinner and book a nice hotel.
“But when we got to our room after going to the restaurant we both just fell asleep.
“The next day when my sister handed back the babies after one night she was exhausted. She kept saying: ‘I don’t know how you do it’.”
The couple endured nine traumatic years of negative pregnancy tests and miscarriages in their quest for a family.
It took five years just to have little Darcie, who finally came along in 2013 thanks to fertility treatment on the NHS.
They went on to try for a second child through self-funded IVF – wiping out all of their savings.
By the summer of 2016 they decided to have one last shot at giving Darcie a sibling and took out a loan for a final IVF attempt – after spending a total of £16,000.
And the shocked pair were stunned to discoverthat Carla was expecting quadruplets.
As for Paul, when he’s not helping Carla with nappy changes and feeds, he is busy extending the family’s three-bedroom home in Grays, Essex, to create a playroom.
And the couple have also had to fork out on an eight-seater minibus for family days out.
Carla said: “We have managed to keep costs down by buying everything secondhand. The best thing we bought is four baby swings for them to nap in.
“I quickly discovered that it is impossible to rock four babies at the same time.
“Having quads is an amazing experience and I am so excited for the future.”
Doting dad Paul says: “Our house has become a mad house, but I wouldn’t change it for the world. Just seeing the smiles on all my girls’ faces is the best thing ”