my son has finally been diagnosed

Hi my son is age 5 and has finally been given the diagnosis of adhd and autism (label's,  i know ), i myself am struggling with long term health conditions and each hour i differ from either major pain or a severe hypo , have the fantastic support from my parent's,  my mum is also my carer , but do feel so very alone and always feel or think I'm doing something wrong , my boy can be happy one second to screaming the next , afraid as something is different etc does not do change well, but every day is an adventure , have to make everything a game or he wont do it or looses interest , school have had some funding so he has a one on one teacher assistant but have applied for more funding , this whole school term has been a negative one on there side especially after loosing his first teacher who sadly left and the new one always puts him down and doesn't make me feel very good as she's made it clear on numerous occasions she doesn't see a great outcome for him going up in the next year , sod her as i / we believe in him and has been doing amazing , finally overcome the potty training and night time bed pants , now it's just the number two's,  he's a sensitive little being and has so much love to give,  love to all , i look forward to reading all and learning new ways of coping and support for the both of us ???❣