Hello everyone, I've not been on here for a while, just lurking!
I wanted to comment on the blue lips/being cold. My three DC are just the same, especially DS. He gets very cold very quickly, goes white, and his lips go bright blue/purple alarmingly fast. Public pools are just too cold, and he can only stay in for a few minutes before his teeth are chattering. The same for the paddling pool, even in the hottest weather with warmish water. And then they take hours to warm up again, despite being dry and wrapped in warm blankets and drinking hot chocolate.
I have bought them all shortie wetsuits, which has meant the can stay in the water for twice as long as before
I first got them second hand from ebay three summers ago, not realising what a difference they would make! This year I splashed out
and got them brand new ones, they wear then every time we go to the beach, and they make such an amazing difference (and protect them from sun burn at the same time!) I haven't been brave enough to take them to the local pool in them though....not sure if wetsuits are acceptable in the pool 
DD is also cold all the time, wears big jumpers, huddles under blankets, etc. and DS dosen't seem to feel the cold like everyone else - he is cold when I am hot and vice versa. He gets clammy and very out of breath when running around (not asthmatic) and takes along time to recover normal breathing rate. And he gets cold when eating...he has to put a jumper or coat on. He often falls asleep after eating too. I have also noticed a salty smell on him, like the sea, after he has been exercising. I am going to ask for all this to be investigated as the only heart checks they have ever had are 30 seconds with a stethoscope, and circulation problems have been swept under the carpet.
DS also has migraines (runs in the family) and gets a lot of pain in his neck, eyes and forehead with them. It has been blamed on his neck muscles being weak and tired from supporting his head.
His eyesight has got worse again recently, he is now going to have two-monthly sight checks, as they think it is going to go downhill again. This is worrying me more than the HMS at the moment :( because he is already incredibly short-sighted.
We've had some good news for DS (well, good in a double-edged sword kind of a way) he has finally, after 4 years of no progress at speech therapy has had a proper assessment done. He has a Severe Phonological Speech Disorder. It is nice to have a name for his speech problems, at least when people hear him attempt to speak and don't know how to react I have a name for his problems. Even though it will be a long hard slog to get DS speaking properly. Also, the speech therapist thinks that it is nothing to do with the hypermobility syndrome, and probably just bad luck that he has both.
And, at last, after three years of fighting and a year of 'lost' appointments and referrals, DD2 has got Piedros! They have made an amazing difference to her ankles already, she is falling over less and seems more confident on her feet! Does anyone else's children have problems with blisters and very sore feet at first though? All three of mine have blisters/raw patches and red feet for the first 2-3 weeks.
I hope everyone ( and their children!) is having a good summer 