The consultant has made me doubt myself

I had my consultation today with the gynaecologist and he's offered me a laparoscopy but he really made me doubt myself he said it doesn't sound like endo these are my symptoms Painful ovulation, constipation/diarrhea/loose stools back pain pretty much all the time like a full ache, migraines, nausea that starts at ovulation then continues on and off till my period, my period isn't painful like others I'm in pain but not excruciating pain...it's more ovulation and when I go toilet it sometimes hurts I also have pelvic pain especially when I go toilet and also fatigue. I've had ultrasounds nothing has showed up I dunno I feel like he's made me seem like it's all in my head