It comes as the photographer recently revealed that a brain tumour removed in 2011 appears to be growing back.
She is set to undergo surgery at the beginning of next month to have “swollen tissue” removed.
Taking to Instagram, she gave her followers an insight into her journey.
She shared a snap of a door at the hospital which read "Pre-Operative Anaesthetic Clinic Suite".
"And so the prep for my surgery in two weeks begins," she wrote.
Following the appointment, she shared further details of her upcoming treatment.
"Thanks so much for all your lovely messages," she began.
"Yes, I went in to have all my pre-op bits and bobs done this morning, like my bloods and an ECG. At least that's done now.”
"I won't have to see Beaumont Hospital for another two weeks, when I go in and have my surgery then. I'll be in for anything up to seven days, and then I have to take six weeks off, and then I'll be back!"
Jenny opened up about her news earlier this month, revealing to her Instagram followers that the tumour may have begun to regrow.
“Hello Everyone. So, I have some news… not the best news but not the worst news either.”
“Some of you may already know that I had a brain tumour removed successfully in 2011 by an incredible person, Professor Ciarán Bolcer at Beaumont Hospital.”
“Unfortunately, after a recent brain scan, it seems there is new activity. This means there is some ‘swollen tissue’ which is probably the tumour growing back.”
However, she had “good news” after speaking to experts, adding: “Good news is, it’s not malignant and Professor Bolger will need to carry out some more brain surgery to remove it.
“Ciarán has assured me that after surgery, I will need to take six weeks off but after that I’ll be back doing what I love and that’s documenting weddings, newborn baby & portrait shoots and of course, bringing out more incredible wedding and baby products.”
Jenny explained what the next two months of her life will be like.
“This surgery will take place in early February. Meanwhile, the incredible Amy who works with me will still be shooting.
“Capturing memories in the studio and shooting weddings for me. If I were getting married again (to Martin of course) there is nobody I would choose first, other than Amy, she is literally me in every way.”
She also paid tribute to her husband Martin and her children.
“I can’t thank you all enough. Thank you for always believing in me and for all of your support along the way.”
“To my lovely Jen at the studio, Amy and to Matthew… no words. Incredible team.”
She wrote with hearts: “My Hubby. My Kids”
“I’ve decided to tell you all about this myself, before it gets out and reading it second hand.”
“I am going to get through this and I’ll be back to the same Jenny you all know in a matter of weeks. Love Jenny”.
Her broadcaster husband Martin has now said that he wants to be by her side during this time and plans to take some time off work.
Speaking to the Irish Mirror, The Six O’Clock Show host said: “My wife is telling me not to [take time off] and we are in the position where our children are a little bit older so they are a bit more responsible.”
“So, Jenny put things in place so I don’t need to take time off, but I will take some time off, especially when she first comes out of hospital so I’ll be there.
“More to babysit her to make sure she isn’t doing stuff and that she is minding herself and relaxing.”
Martin added that he and Jenny are extremely thankful for the kind messages they’ve received from members of the public.
“It was so lovely. It really rekindles your faith in human kindness when you receive messages like that.”
“We’re in a good place. Jenny is in a good place. We’re just looking forward to the other side of it.”