It looks like the crap is hitting the fan in Usher and Tameka Raymond’s divorce matters. Apparently, Usher thinks the couple’s second son, Naviyd, is not his biological son.

Sources have revealed that Usher has already requested a DNA test to be performed on their younger son. He thinks that Tameka was cheating on him while they were apart. He was traveling for a while for work, which left them no time to get busy beneath the sheets.

A snitch says, “From the moment wife Tameka told him she was pregnant with 6-month-old Naviyd. The first thing Usher said was, ‘How did this happen?’ – because he was gone a lot, and their sex life was very, very limited.”

Another snitch revealed, “People have been telling him that around the time the little boy was conceived, Tameka got together with another man.”

She insists that Usher is the baby’s father and they hooked up for one night, thus conceiving their second child.

Stay tuned, methinks it’s about to get messy!