hello
The good news is that you already have some solid acceptances. The only thing you can do now is wait and see.
Do you have valid reason for the lower than average GPA coupled with your very competitive SAT and outside accomplishments? UC’s tend to be very GPA focused so your GPA will have a large impact on your chances.
2018 Freshman admit rates for UC GPA of 3.40-3.79 capped weighted and not major specific:
UCB: 1%
UCSB: 8%
Yes, I’ve clearly explained my circumstances in the essays I sent to every school (family trouble and health issues). I’ll hope for the best.
Best of luck.