Jessie Cave has welcomed her third child after an "extreme" birth.

Jessie Cave (c) Instagram

Jessie Cave (c) Instagram

The 'Harry Potter' actress and her husband Alfie Brown welcomed their son into the world on Wednesday (21.10.20)  but she admits her pregnancy was much more "humbling, terrifying and out of her control" than her other two births.

She wrote on Instagram: "Abraham “Bam” Benjamin ... Our baby boy was born in the early hours yesterday morning just 40 mins after my waters were broken. Slightly extreme but so were his kicks throughout the pregnancy! This has been a very different experience to my first two births ... much more humbling, terrifying and out of my control.

"We are currently in the neo natal unit but he’s a strong boy and it’s the safest place for him right now. The midwives (Magda & Daisy) and the doctors and neo natal nurses have been amazing (our first one to welcome us into the ward was named Rosaria and she was extremely comforting). Thank you for all the cosmic well wishes ..."Thank you to @alfiebrowncomedian for being so wonderful (again) and taking this picture in the seconds after he was born and just moments before he was wheeled away out of our arms... honestly one of the hardest moments of my life ... hopefully he will be with us soon and it will be even more perfect ... And BIG LOVE AND RESPECT for all the mothers who’ve experienced the neonatal unit before us, along with us ... #NHS (sic)"

Jessie previously revealed she fell pregnant with her first child on her first date with Alfie.

She admitted: "I told myself I was not going to go crazy the morning after. Because it was futile: he didn’t want a relationship … He text me a couple of weeks after, asking to go on a second date … I didn’t get round to arranging it, because I was pregnant."