This is not the first time I've seen a question like Casual sexism at work? receive a pile-on of comments and answers explaining to the OP that they're not really experiencing sexism (or, for bonus points, are being sexist for assuming the motivation in their co-workers).
While the question could do with more details and more examples from the OPs point of view, I don't think this is a very welcoming response to a new community member who may really need some help and guidance.
In particular, the various "you're not experiencing sexism" comments are swamping a legitimate request for more details and clarification.
Surely it's better to assume that the OP may actually be experiencing sexism, and that asking for more details will help garner answers that could actually help rather than dismiss her situation?
As a man myself, I'm rather disappointed that these very negative responses seem to be all coming from men.