My doctor, at the time of the cyst, said that anything over 5-6cm was when you needed to be concerned. Other than that, it was normal as technically we get a cyst each cycle (folly), which produces the egg. Sometimes they don't disappear as quickly as they should. Around 6 weeks is when they should start lessening by, before you/specialist should be concerned.

Me = 34, DH = 34
TTC #1 for 2 years. OI: Sept '13: BFP (chem), Oct '13: BFN, Dec '13: BFN