Many of us get to a phase in transition where people are confused about our gender, and some take a guess. It happened to me on occasions, and was a factor in when I decided to present as myself fully in public, as I wanted to help them know how to address me. I was never discriminated against, as people were genuinely trying to gender me correctly, and I decided to help them by making my gender presentation obvious. I still got occasionally misgendered, but it was not a big issue for me.
Hugs,
Allie