It does sound to me like PCOS. I have it and dont have all the symptoms. I too was told that it was hard to fall pregnant but here i am with a 1 week old baby lol

Most GP's wont diagnose it as they didn't study gynacology (sp?) in uni and so they just base most the symptoms you tell them on 'hormone imbalances' or 'normal'.. thats what happened to me for 4 years until i found one doctor who tested me for PCOS and i found out i had it.

I also thought many times i was pregnant as sometimes the symptoms of the condition can be similar of being pregnant.

Good luck with getting tested and hope you get an answer to why your body is being weird.