I may be being over sensitive or maybe not reacting in the right way when this happens but -
I was single for a long time before I met my OH, I had lots of friends who when I met him I was very careful not to drop and I made sure I made time for them without OH, and kept in touch (this was often not easy as OH is in the forces and we do not get much time together but I always included/invited my friends around/to nights out with and without my OH - esp my single friends).
OH is away for a long period so I have made sure I have made loads of plans in advance so I can catch up with all my friends esp when I have "kid free" time. Friends are always really up for things but it feels like all of them have cancelled on me last minute recently, leaving me spending two bank holiday weekends alone, and plenty of evenings where I have had no kids and its too late to make other plans.
I know this is not because my friends hate me (I am not deluded) or I am shit compnay - I think its just because they are thoughtless and don't realise how hard I am finding it with my OH being away and not contactable(although my BF does and constatnly cancels on me but thats another story and a v controlling boyfriend 
).
AIBU to think that people seem to just cancel these days (with sometimes really lame excuses) without considering how the other person might feel and how should I react - as at the moment I'm just saying "Ok thats a shame, but thats fine" and not getting pissy.
How do I respond nicely but letting them know I am pissed off without it resulting in tension/a row?
When really I am so pissed off at any attempt I make to be active and occupied just leads me to being let down and being on my own 
Reading that back makes me sound quite sad 