Kourtney Kardashian, Travis Barker began planning for baby after ‘a few months’ of dating

Kourtney Kardashian and Travis Barker began planning to have a baby together soon after they started dating each other.

The beloved couple, who got engaged last year, have been trying to have a baby. However, an insider has recently revealed that the two "decided to try and get pregnant after they had dated for a few months" and began the in vitro fertilization (IVF) process "last summer."

A source close to the couple told PEOPLE, "It's been an emotional rollercoaster. They never expected it to be as hard as it's been."

Revealing how depressing the treatment has been for the Poosh founder, who has been facing complications in her IVF journey, the source continued, "It's been especially difficult for Kourtney. They still would love to have a baby. Travis is not putting any pressure on Kourtney though. He just wants her to be happy and healthy."

The Kardashians alum, 43, is already mom to kids Mason, 11, Penelope, 9, and Reign, 6, with ex-husband Scott Disick, while the Blink-182 drummer, 46, is dad to son Landon, 18, and daughter Alabama, 16. He also shares stepdaughter Atiana, 22, with his ex-wife Shanna Moakler.