S42·E47 Episode 6488 (Thu 28th Feb 2013) (Part 1)

Bob is concerned about Brenda's moods and begins to wonder if he's the cause, as perhaps she is having second thoughts about them. Brenda admits that she has been a bit unwell recently but says it's her hormones, although it's clear she is worried. Bob reassures her, but Brenda explains that she doesn't want to visit the doctor, secretly worrying it could be something else.