<human>: Can you condense the text into a few key points?

Hi /r/relationships, my long term girlfriend of 6 years (living together for 5)has crippling IBS, specifically diarrhea along with nausea and It has been causing some problems in our relationship. This all started about 1 year into the relationship and has slowly escalated over the years. It has gotten to the point now where it is making our sex life very challenging. It was already challenging to begin with as birth control destroyed her sex drive (caused vaginismus) and even after coming off barely recovered, sex comes about twice a month where my personal sex drive would want it daily if not more (i don't expect it daily but ideally a few times a week at least). She tries to give me oral occasionally but the nausea makes it impossible most of the time. Now that her ibs is so severe she has finally spoken to a gastro to get many tests done which makes me very hopeful things can be better in the future. I love her to death but I don't want to live my entire life like this and as things are I am not happy. I do everything I can to help and support her, i buy new supplements to try, suggested getting the gastro referral in the first place, buy her foods that will cause good stool , talk to her, comfort her etc. The hardest part I think is coming home from a 12+hour workday exhausted but just wanting to be comforted myself and having again to continue to comfort someone else, and when all is said and done there isnt much room for my needs or wants. I know that it is not her fault she has this and we have had this conversation several times now where I have broken down into a crying fit explaining how I feel and i feel like its a recurring theme in our relationship.
<bot>: Girlfriend suffers from ibs, destroyed sex drive, unhappy with how its going but I love her and want it to work