Jennifer 'JWoww' Farley was left devastated when she thought she had suffered a miscarriage.

The 'Jersey Shore' star - who announced last month she and fiance Roger Mathews are expecting their first child - was terrified when she started bleeding just a day after taking three positive pregnancy tests.

Explaining she was travelling to Nashville for a tanning convention with best friend Nicole 'Snooki' Polizzi, she said: "The following day I met Nicole (Snooki) at the airport and I was so anxious because I didn't know about the pregnancy dos and don'ts and wasn't sure if it was OK for me to fly.

"When I went to the bathroom, I saw blood and panicked. So many thoughts were running through my head. I felt a loss like no other when I thought that I was no longer pregnant. I whispered it to Roger and for that whole ride we just stared straight ahead and didn't say a word. I went to bed that night in Nashville praying it was just a thing that happens."

Luckily, the 27-year-old star took another test the following day and was relieved to find she was still pregnant.

She continued in a post on her blog: "The following day I told my manager to buy a 'stupid proof test' which literally says 'pregnant' or 'not pregnant.' It said pregnant and she cried and I cried and Roger looked like he was going to pass out! Hahaha. That day in Nashville I was on cloud nine."