A woman was hospitalised three times after she was bitten by a spider lurking under the loo seat.
Jo Kenyon, 34, was sat on the toilet when the insect - thought to be a false widow - scurried out and sunk its fangs into her thigh.
She flushed it down the pan and called 111 where medics told her to rush to hospital over fears it would get infected.
Doctors had to pop the huge blister which formed under the fang marks - and the radio producer was forced to twice return to A&E to have the mass drained.
The bite mark was so painful she could barely walk, and doctors feared it might result in life-threatening sepsis.
Radio producer Jo, from Leeds, said: “The doctors said that if I hadn’t come in straight away then the bite could have led to sepsis and possibly killed me.
“It was really painful to walk for the first few days and then it hurt for weeks whenever I tried to sit down.
“I’ve been terrified of spiders all my life. Given that everyone knows how bad I am with spiders and how far I go to avoid them, most people’s response was that it could only happen to me!”
‘I lifted the toilet seat and saw this massive spider’
Jo had only just woken up and stumbled into the bathroom to use the toilet when the spider bit her last year.
She felt a burning sensation on her upper left thigh and immediately jumped up from the loo.
Jo said: “The only way I can describe it is it was like when you brush past somebody who is holding a lit cigarette.
“It was such a sudden and strange burning sensation that I immediately jumped up, thinking what the hell was that?
“I lifted the toilet seat and saw this massive spider that had been hiding underneath it.
“I screamed instantly at the sight, managed to knock it into the bowl and flushed it straight away.
“It was so huge, it was a real big b****r! It completely freaked me out.
“I looked in the mirror and I could see these bite marks - tiny pricks from the pincers.
“I left it for half an hour but it was properly stinging and when I looked in the mirror again, I could see it had all blistered.”
Jo called 111 just in case where the seriousness of her situation hit home as operators told her to go immediately to A&E due to fear of the spider bite becoming infected.
By the time Jo arrived at Otley Hospital, she was delivered the shocking news that the bite could have become septic and killed her if she’d left it any longer.
‘It took months for the pain to stop’
Jo said: “It was really scary knowing that a spider bite could have killed me.
“It was especially frightening considering it happened in England - I’d put off going to Australia for years due to fear of spiders, but it was in Yorkshire that I got bit.”
Jo ended up being hospitalised three times in one week due to the spider bite where doctors popped and drained the blister before cleaning and dressing her leg.
Her third visit to the hospital came after pain from the bite became so severe that she could barely walk and struggled to sleep.
Jo said: “I could barely sit down when the pain was at its worse, the bite was just in such an awkward place.
“I could hardly walk and I had to sleep on my front for ages because it was just too painful to sleep normally.
“It took months for the pain and the oozing to stop, and by that time it was winter so all I wanted was a bath but I couldn’t get that area of my leg wet so I could only shower.”
After months of painful recovery, Jo’s bite healed but she has been left with a scar.
Doctors told her that there are two types of spiders in the UK that can bite humans - garden spiders and false widows - but could not determine which it was.
Jo said: “I’d just tell everyone to always check under the toilet seat - you never know what could be hiding there!”
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