Want to move area but worried about changing sons school AGAIN

[Shellp90]

Hi,
I moved 50 miles from my homewtown 2 years ago but I am desperate to move back. My partner now works away 3 weeks at a time, so I am completely on my own with my 8 year old son most of the time. I don't know anyone here. I am also now 4 months pregnant, so the thought of feeling even more isolated with a new baby and no help is making me very worried.
I get upset a lot because I miss my friends.
My son loves his school, however it is not in a very good area and their seems to be a lot of bullying. My son isnt being bullied, however he does mention some older children saying nasty things sometimes. It worries me that it will be even worse at high school if we stay in this area.
My son has already been to 3 different schools (2 he absolutely hated and they didnt support his SEN needs as he has ADHD/ASD) so I am very worried about changing him again.

Any advice would be great.