Just popping in (am supposed to be working)
I imagine the KY jelly thing is great externally, but the cervix and walls need some protection too (especially as the walls tend to thin now too), so unless you're going to squirt a vast quantity up there, there's going to be discomfort, possible problems with cervical erosion etc.. That's my guess.
It sounds like you could try Evening Primrose for the PMT, i've heard it's really excellent for mood swings!..
I suddenly had hot flushes about 4 years ago for 6 months, then about 12 of them last summer with night sweats, they felt like my blood was boiling from the chest up (mainly face) does that sound familiar? Excessive sweating would make sense as our internal temperature controls are up the spout.. just a thought though, have you had your thyroid checked recently (simple blood test) as thyroid problems can emulate perimeno symptoms.
I looked up Menolieve, no good for me, as it's mainly Black Cohosh (sp?) herb, akin to oestrogen.. my levels are ok and as i have oestrogen fed Fibroids, i don't want the buggers to grow. My problem is struggling Progesterone..
Yes, fatigue, headaches, brain fog here too, but my biggest problem is palpitations, anxiety and really bad aching joints particularly in my feet and ankles (am hypermobile too). This is causing a huge problem as i walk everywhere, which i usually like to do fast (no car) and it's soo painful, because of this i struggle in getting from A to B, or exercise like i used to.
I also have Raynauds syndrome, affecting my fingers at this time of year (i sew, and work in a wholefood shop for a living) and now am also awaiting a genetic test for Marfans syndrome, which affects the connective tissue throughout your body. But hey, i can still have a laugh! and apart from limping like an old lady, noone can tell my body's falling apart 
Apologies for long post! 