What am I (Agender/gender queer/gender fluid)?

So recently I've come out as gay and I guess this has allowed me to start exploring myself more.

I'm biologically male - well, at least externally.

I've never demonstrated typical masculine characteristics. I'm quite emotional, sensitive, played with dolls and Barbies, have long hair and do not look masculine at all.

I've always identified as male, but have never felt like one truly.

I physically look androgynous and have been mistaken as female on many occasions.

Recently, I asked myself this question, "What is my sex?"

I spent days thinking about how to answer this question and have come to the conclusion that I have no answer. I neither feel fully male or fully female.

In fact, I seem to fluctuate between feeling masculine and feminine every other day or so. Other times I don't feel either and I don't even think about my gender.

Some days, like today, my gender identity has switched about 4 or 5 times, once within the space of a couple minutes.

I've come to the conclusion that I'm not trans as I don't feel female, even when I feel feminine. But then again, I don't feel male most of the time either.

This is what I would love to know:

Am I some form of trans?
Am I agender?
Am I gender fluid?
Am I gender queer?
What am I?