I tried so many times yesterday to answer this but my connection is terrible lately.
Don't ever be sorry for the way you're feeling, you can't help it and you are allow to feel how ever you want.
The dermatoligists appiontment must have been hard for ya, exhausting i'd dare to presume. I know how you feel (well you know what i mean), Some days/weeks/months it's just too much, there is only so much pain and uncertainty a person can cope with i reckon. Some days all i have to do is stub my toe and it's the straw the broke the camels back, so to speak.
The stretch mark thing, i know one of my girls is prone to them, and has a few just from getting taller in places i wouldn't have thought of, that said, you can always get a second opinion on that, she could be wrong or wrong about the reason.
Also i get (i think) what you mean about being selective about what you say to doctors or people, i had the same kinda reaction with that bladder physo the other day. I knew the look she was giving me, especially when i say i'm just a mum. It's like 'a bored housewife wanting attention' kinda thing at the same time when i've tried to tell some doctors/specialists they fob you off with, 'i don't need to know all that'. It's bloody frustrating.
Anyway, back to you, sorry I'm rambling again, How's today going, any better ? It's hard to put on a happy face when nothing in your life is normal, and very few people get that i think, unless it's actually touched their lives somehow. Sometimes i wish i could reach out and touch peoples arm for a few seconds and transfer the pain over, then ask them how you are suppose to deal with it 24 hours a day.
I need to write my daily routine down, i have so much trouble remembering stuff, I've also started keeping a section where i write maybe one thing that made me happy for that day. Sounds lame i know, but sometimes it helps. Sometimes all i can think of is that i'm happy to have a roof over my head. Some days it does help, maybe it's seeing a butterfly or a bird, and because i need to go back to my book often during the day, i'll remember it again and again.
It does sound like your having more than a bad week though, so i'll stop rabbitting on
Hope today is better. BTW, i think you do great, you are so young and it's not fair, but i reckon you do great, you sure are a nice person to know :)