I think this is incredibly important to bring up with your therapist. It sounds like you have already made the connection between how you feel about crying in therapy and how your emotions were treated when you were a child. Noticing that is huge!

I was surprised at how my therapist barely reacted the first time I cried in session. Normally a friend might try to hug you or soothe you, but I think therapists under-react as a way to encourage you to feel your emotions without judging them or trying to stop them. That said, given your history, it makes a lot of sense that you feel ignored and judged by your therapist's non-response.

These could be really important things to explore if you feel okay bringing them up in session. I highly doubt that your therapist thinks you are ridiculous, and seeing that it's really okay to cry in front of another person might be pretty liberating.