Hi Kerri, welcome to BB We are also in the unexplained category so I know your frustration. We have gone down the IVF path due to what was explained to me as being very good success rates but we haven't had much luck so far. My recent cycle ended today after finding out the my eggs didn't fertilise so we have to start again.
Good luck, and I am sure there will be some other girls around who may be able to share their thoughts on any natural therapies they have tried. I haven't gone down that path myself as yet apart from 2 sessions of acupuncture that I have had in the last 2 weeks.