No, you wouldn't necessarily have received a denial by now, your claim could still be processed and you may still be approved. (EDD is very very overworked and understaffed, so oftentimes processing can take weeks and weeks if not months).
Yes, you can file a claim for unemployment benefits if you quit due to 'good cause,' which is defined as a reason that would make a reasonable person who wanted to keep employment leave his or her employment in the same circumstances.
It is not based on whether the workplace affected your health alone, the issue is also whether it would have caused a reasonable person in the same circumstances to also need to leave his or her employment.
You can read more about quitting due to a health condition (including a hostile work environment causing you stress, anxiety, etc.) here:
http://www.edd.ca.gov/UIBDG/Voluntary_Quit_VQ_235.htm#Quit Not on Advice of Physician
It would need to continue to be detrimental to your health or you had a reasonable basis for believing it to be so to get afforded unemployment benefits.
You can contact EDD online to find out about your claim at the Ask EDD site here:
Please let me know if you have any follow up questions.
If not, please remember to rate my answer positively so I get credit for my work!
Thanks and best of luck!