You babble away! Several ladies have seen Professor Studd with good results. Hopefully they will be along with helpful info..
If by paying for an appt. and treatment you get a semblance of Life back, then go for it! Many years ago Dr Kathleen Dalton found that PMT was governed by hormones
and recommended eating every 3 hours, 24/7 - it certainly helped me a lot.
I found grazing useful too. Annoyed the Hell out of the In-laws when I ate at different times to them in order to fit into my new health regime and keep my blood sugar levels even.
. I still have 'safe' foods when travelling in case we can't get to a cafe.
Browse round. Make notes. You may find taking a list of symptoms with you to your GP appt. useful as well as keeping a mood/food/symptom diary. Let us know how you get on!