Mrs Hinch has told how she has gone into "shock mode" as she waits for her son to have a heart scan.
The home cleaning influencer, whose real name is Sophie Hinchliffe, added the last 10 days had 'kicked her mind and body in a way she had never felt before'. Earlier this month, the 33 year old revealed she was "living a real life nightmare" after her little boy Ronnie was taken into hospital with an unknown illness.
The four year old, who was suffering with a swollen neck and a high temperature, was later diagnosed with Kawasaki disease. The condition, also known as mucocutaneous lymph node syndrome, mainly affects children under five and causes blood vessels to become inflamed - which can lead to heart complications.
Earlier this week, Mrs Hinch revealed how Ronnie had been allowed home from hospital in time to celebrate his fourth birthday on Wednesday. But she has now told how still is struggling to process what has happened in the past two weeks.
In a post on her Instagram account, she wrote: "Now Ron is back home I thought everything would be ok again. Ron is doing so well and picking up a little more everyday, we're just waiting for his next echocardiogram.
"But I seem to have gone into a bit of shock mode myself. My body feels like jelly and my stomach is churning.
"I'm sure this will pass? But the fear I've felt over the past 10 days seems to have kicked my mind and body in a way I've never felt before.
"But I just wanted to pop on and say Hello. I can't wait to get back on here doing what I love which will hopefully help with getting back to normality but for now I apologise for being so slow."
She ended by saying she planned on doing a mini Q&A with fans in a couple of days 'if all was okay'.
Mrsh Hinch, also mum to two year old Lennie, first broke the news of Ronnie's illness on her Instagram page. And earlier this week, she shared snaps of her little boy while he was in hospital and wrote: "Ron, you are SO brave, SO strong, SO loved and just a beautifully unique darling boy."
She added: "We have spent the past 10 days living whats felt like a real life nightmare. But I just wanted to thank you all for so many kind messages and update you all.
"Ron's temp spiked 40 at home, I phoned an ambulance. Ron was admitted and IV antibiotics started but NOTHING was working, in fact Ronnie deteriorated.
"The incredible doctors and nurses started every blood test and scan you can imagine. We paced rooms and corridors for days just waiting for an answer, a result . anything!
"Seeing Ron this way kicked me with a fear and desperation I've never felt in my whole life. What is happening to our son! Please tell me! After a couple of days , more symptoms appeared and results returned.
"Ron was diagnosed with Kawasaki disease, something I had never heard of before."
This week, a mum whose son also suffered from the condition praised Mrs Hinch for raising awareness about it.