Ravika was celebrating her birthday on holiday with her husband when her Oura ring sent an unusual alert: her health score was poor. Her heart rate had risen, her body temperature was elevated, and her heart rate variability had dropped — yet the 34-year-old solicitor from the West Midlands felt completely fine. A week later, with the stats still off, she searched online and found a community of women all saying their fitness trackers had detected pregnancy before they did. A week after that, she had a positive pregnancy test.
But the early warning didn't end there. After some cramping and a phone notification telling her that her body appeared to be under significant strain, she went to her doctor. She was told to return in 10 days for tests to establish whether the pregnancy was healthy. The waiting, she said, was agonising — and led to an anxious ritual of checking her fitness tracker obsessively.
“Fitness tracker alerted woman to pregnancy before she knew, leading to anxious wait for viability test.”
"I was waking up at 4am every night just to refresh my app to see if my stats were still low, if my temperature was still elevated," Ravika told the BBC. "I was holding on to hope that it was a viable pregnancy." She described the constant checking as an "obsession" that felt like "a life or death situation".
For most women, the first sign of pregnancy is a missed period — the same time a standard test works. But fitness trackers can spot changes in body temperature earlier. In a typical cycle, a woman's temperature stays elevated until just before her period, when it drops sharply. In early pregnancy, it remains high. Trackers that monitor body temperature can pick up on that symptom before a period is even due.
Ravika is one of hundreds of women reporting online that their wearables gave them an early indication. Fitness trackers — smart rings, watches and chest-mounted devices — have surged in popularity in the UK. According to YouGov research, 36% of British adults owned and used one in January 2026, nearly twice the proportion in July 2019. Oura, a Finnish-US company, leads the smart ring market, followed by India-based Ultrahuman and Hong Kong-based RingConn.
As Ravika waits for her test results, the stats that once alerted her to the pregnancy now fuel her anxiety. "For me it really did feel like a life or death situation," she said — a stark reminder of how deeply the data from wearable tech can entwine with the most personal moments of life.
