I also used it only once and its the cycle i conceived My dh thinks they use someone elses swimmers in it thats why i fell that month! I never thought i needed lube but once i read all the testimonials etc i was convinced that i shld give it a go! I never got ewcm around O time so im thinking it helped get the swimmers to my egg. I also took evening primrose oil.. i heard that it helped to make ur cm more fertile.. might be worth googling!
The best of luck!!
ps. I wld suggest doing the whole inserting of it on ur own.. i tried to get my dh involved in the whole process.. i dont think it was much of a turn on!! haha.
Oh and if ur naturally wet (tmi!) dont use the whole amount that they say to use.. u dont want it being too slippery! U will see what works best for u tho.