Hi Nat, I'm replying bit late tho... d:-)

My Gyn/Infertility Spec/IVF Dr said he only lets his patients take 4 cycles at a time, then at least a month break, as it can affect the endometrium, also this is the reason why he never prescribes it for CD5-9, only CD4-8. Hope this helps, although seems that everyone's Gyn have diff opinions.