Ugh. I know exactly what you mean. I am just the same. I'll do the silent thing, or be short with someone and if they don't notice I'll bottle it. I don't hold on to it for long, but I wish was better at saying something.I wish letting people know when I am hurt or mad was easier for me to do. I hate confrontation, so I might say a little something, but if it goes without notice, the feelings get bottled.