Definitely look into PCOS. I have it. I can eat carbs, though, without them stalling my weight loss. I have lost weight without going low-carb. But, again, everyone is different.
I feel you on the "not eating breakfast" thing. I did not eat it for years because when I was a kid I would get sick if I ate breakfast before school. Every time I tried I would end up puking or with a stomach ache. For some reason I can eat breakfast now as an adult without it bothering me.
It is good you tried a later breakfast. See if you can find some other foods you like besides all the pasta.