Hi Bez, you sound exactly the same as me, ages aswell!
After being diagnosed with stage 4 endo I was told to take the pill back to back with no break by my surgeon so I have no periods but my GP told me I must have a break after 6 months so as not to cause future problems such as thickening of the womb lining, so now I just have 2 a year which is just about bearable!
I started on Microgynon which when I used to take it 'normally' years ago was ok but taking it constantly gave me a 2 stone weight gain and really bad water retention that wasn't helped even with prescription water tablets and it didnt help with the pain.
I then switched to Trinordiol (think that's what it was called) but only for 3 months as the water retention was still bad and I felt sick all the time and it still didn't help the pain.
I would suggest you ask your GP for Yasmin.
Some are reluctant to prescribe it as it is more expensive than others but I have a good GP who prescribed it with no questions.
I've now been on it for 18 months.
I have minimal water retention, still bloated though but I am trying to help this thru the endo diet, I have lost most of the weight I gained, mostly due to the endo diet; and more importantly I have massively reduced day to day pain, apart from on breaks which are still horrendous.
Some of my pain is from twisted organs though which I cannot do anything about without having them removed which is my next step when I choose to take it, but the rest is significantly reduced.
I have not had any time off work for over a year now due to endo and manage to do most thing I want to.
Sex is better too, still 'tender' but not excruciating like before so my hubby's happier too!
I highly recommend Yasmin and it's definitley worth giving a go, although obviously everyone is different. I have been told I will not be able tpo carry a baby full term due to the state of my organs but Yasmin has certainly given me a lot of my life back.
I wish you all the best.