Hi, I had endo excised in October and only about 10% of my pain eased, so I was sent for an MRI last month which showed no further endo but probable Adeno. They can't fully diagnose until after hysterectomy which I'm booked in for on 9th May.
Symptom wise - I feel like I'm over 9 months pregnant. Dull constant pains rather than sharp red hot poker pains I had with endo. Feel so heavy on the inside. Constant pressure on my bladder so I'm nearly incontinent, back-bum-leg ache, out of breath after climbing up the stairs, number 2s are urgent, and I'm now getting heartburn too. Huge sticky out tummy that's really hard (although mine does go squishy again for a few days before my period). All things I felt when I was very heavily pregnant.
My period pains are also lower nearer my pelvic bone rather than up near my ovaries, and yes I get contraction pains too like second stage labour when you get the urge to push! Oh and I feel like I waddle 😅
Period wise, I'm not as heavy as some people, but my lining on MRI and hystoscopy looked normal, it's the walls themselves that look to be causing me trouble. I do still get big clots that sometimes won't flush away.
Finally I'd say from my experience my endo progressed over years, whereas Adeno got significantly worse rapidly over months.
I hope that helps. I would suggest if you're still in pain after endo is removed you go back to your specialist and ask for an MRI to rule out everything else.