According to entertainment site TMZ, Stephen showed up at Cedars-Sinai emergency room - a hospital popular with celebs - on Tuesday morning.
The star was complaining of back pain, adding that he had no idea how he could have damaged the area.
He told RadarOnline: ‘I woke up and my back was hurting really badly, and Mel brought me to the hospital.’
‘We had just recently flown back from New York City and wanted to make sure it wasn’t deep vein thrombosis.’
Addressing rumours that the couple are on the rocks, Stephen added: ‘We are solid and are in a good place. Mel brought me to the hospital and has stated by my side. I love my wife.’
Mel B recently appeared on American talk show The View, where she said that despite having little in common with her husband, this doesn’t matter.
‘I like him a lot,’ she said.