While it is possible to experience an LH surge without ovulation, it is unlikely. A positive LH test combined with other fertile signs like egg white cervical mucus mean ovulation is likely imminent or has already occurred. It is also possible to miss the LH surge if only testing once per day. Ovulation can occur as early as 5-10 days after stopping Clomid, so monitoring with ultrasounds is recommended when taking fertility medications. Getting an LH surge at 6DPO is unusual but not unheard of, and increased cervical mucus during the TWW is a common symptom.