These all depend on the context of course, but I would consider five of the six uses completely standard. I don't think the use of "I feel" or "I'm (I am)" makes any meaningful difference.
The only one I wouldn't consider standard, though in a rather narrow set of circumstances not necessarily incorrect, would be the use of I'm cold = I have a low libido.
To express low libido, the following would be understood (in US English);
- I'm not in the mood,
- I'm not feeling it.
Less accurately as it deals more specifically with consent, but commonly conflated, low libido is expressed as a lack of desire, such as;
- I don't want to (have sex),
- I'd rather not.
There are many more commonly understood ways to express high libido than I could list. Below are just a few.
I'm (I am);
- feeling sexy,
And of course compliments to your partner and inquiries about their level of desire or willingness to have sex can carry a message of high libido without ever explicitly referencing your own libido.