Britney Spears’ month long rehab spell was hard hitting for her mainly because the singer feared her two little boys getting detached from her while she was being treated.

Snitches claim Brit was deathly afraid her sons would forget her.

“She was so afraid her sons would forget her,” a tattle dishes.

During one of the kids’ first visits to the clinic with Kevin, Sean, reportedly burst into tears after seeing her.

“Britney also started crying. She told Kevin ‘I am ugly and Sean hates me’, It was her worst nightmare,” the source added.

Maybe the bald head made Sean confuse her for a clown.

The main reason for Britney’s anxiety, however, is the reunion between Kevin and his ex-girlfriend Shar Jackson (the chick who was preggo when Britney snatched Kev’s broke ass from right under her nose), who is apparently spending lots of time with the two kids.