Hi Tryingtostayrational
Thank-you for the welcome and your kind post 
Yes I am in the UK. I have just booked the appointment, it's at the end of June not sure if that's a long wait or reasonable waiting time for a fertility clinic it's all quite new to me.
I have had tests previously due to the endo issues which also covered fertility side of things iyswim. Had a ultrasound, hystercopy, hormone and day 21 blood tests. Hormone and day 21 showed normal results and that I'm ovulating. Ultrasound and Hysterscopy, there was nothing at all to indicate why I have the endo pain and why I'm not getting pregnant.
I had a laproscopy a few years back and the discharge papers said my tubes looked normal and clear. Any tests since have also said the same. Which is why the gynecological consultant wanted me referred to get to some proper investigations going . DP hasent has semen analysis as of yet. He's a bit apprehensive about it all and up until very recently has been very reluctant.
I'm just worn down in a way with all the stop, start of it with the endo issues, the monotony, Trying to be positive, Waiting hopefully, just for it to amount to AF at the end of every Cycle. And hen for an extra kick the pain and crappy feeling that comes with it. I'm like you, my hormones have a big impact on how my mood is affected.
I'm glad to hear the exercise is helping you and you have the Meditation app have not heard of that app. I hope all goes well with your results in a couple of weeks and it goes quickly for you getting to your appointment date.
Thank-you again for taking the time to chat and all the helpful information
Xx