There was loud music, dancing, flashing lights and bank holiday fun when, suddenly, Laila Everett was "on the floor" and she "couldn't move and couldn't talk".

The 21-year-old believes she was spiked by an injection.

"I could hear everybody talking to me but my mouth wouldn't move," she said.

Everett, from Hull, also suffered from severe vomiting. She was taken to hospital in an ambulance and woke up with a small red mark on her shoulder, which is where she believes she was injected.

She said: "I can't really say it was scary because I didn't know what was happening, but when I woke up I thought of the 'What ifs?'

"You hear about sexual assaults where young women wake up in bushes naked after being spiked. That could have been me."

Everett said she does not want to go on a night out again following the incident in Hull's Old Town.

"I've got two kids. I'm scared that if I do go out and it happens again, I might not be so lucky next time," she said.

"I just can't understand why they spiked me."

Humberside Police confirmed it was investigating the suspected spiking on Whitefriargate in the early hours of last Sunday.

It comes after spiking was recognised as a specific criminal offence in the Crime and Policing Act, which received Royal Assent this year.

Under government guidelines, it is important for victims to be tested as soon as possible because some drugs leave the system within 12 hours, but police can carry out tests for spiking up to seven days after a suspected incident.

In her case, Everett said the police had taken samples, and she was awaiting the results.

Brandon Collins, 20, went there with friends. It was a sunny August day and he was due to meet his family later.

A few weeks later, pointing to a street corner near the A63, he said: "I was laid there in a pool of sick. I must have been there for about a good hour unconscious until a woman found me."

He added: "It brings back a lot of the memories and trauma being here. My family were so scared as no-one knew what happened to me."

Collins said he did not feel an injection or notice anything wrong with his drinks, but he thought he was spiked as he said he had had only a couple of drinks and it was early in the evening when he felt severely ill.

"If I was to go out in the future, the incident would play in the back of my mind as if it was going to happen to me again," he added.

Collins did not report his incident to the police but said he was helped by ambulance staff.

Research by Drinkaware and Anglia Ruskin University suggests that 90% of spiking incidents go unreported.

Colin Mackie, who founded the charity Spike Aware UK with his wife Mandy after their son Greg died from having his drinks spiked, said he believed spiking via needles was on the rise again.

"For some unknown reason, it seems to be returning. It's worrying because you don't know where the needle's been and you don't know why they're doing it," he said.

Students are due to head back to university this month, and Mackie speaks to around the country during freshers' weeks.

"The scary thing is most students say they expect to be spiked at some stage when they are out," he said.

"That's a horrible way of thinking. No-one should expect to be spiked - they should be expecting to go out and have a good time with friends."

The signs of spiking include confusion, loss of co-ordination, slurred speech and unconsciousness. Never leave someone alone if they show any of these symptoms.

Seek immediate medical help.

Call 999 if someone is seriously unwell or unconscious, and use the recovery position or CPR if necessary. In less urgent cases, contact NHS 111.

Always report suspected spiking to police.