Why Can't I Speak Up?

I have the hardest time opening my mouth and speaking up to my family.  I can blast a stranger or a friend in a heartbeat with my opinion but when it comes to my family I just keep everything to myself.  I mean there of course are times when I open my mouth but not when it should really matter.  I have a habit of waiting until I just can't contain it anymore then everything is worse than it should be.  I should really work on this issue, but I sincerely hate confrontation and how people can make me feel guilty.  I mean, my in-laws are disrespecting me and my role as their son's wife and I don't say anything, and my husband wants to go 3 hours away to visit his parents and I don't want him too and still I don't say anything.  Its not that I don't want him to go, its that they were already planning to come here this weekend for a day so why not let them?  Why do I have to be the one who has just gone 6+ months without you being home and yet you're fine with leaving again?  I'm pretty sure if I say something he'll try to guilt trip me or either be pissy, neither which I feel like dealing with.  I haven't addressed the in-law situation because I don't feel like being lied to (especially to my face) and I think that is something that Cam should handle, after all they are his parents.  So I'll probably just sit here in silence until I grow a pair or until I get pissed enough to say something.

I'll update more later about my baby adventures, I had a doctor appointment yesterday.