My husband is in a similar situation. Since he can't return to his normal job, he will be terminated and we have to pay for Cobra. The only difference is that since you are part of a major layoff, the stimulas package contains a bailout for you. It will pay 65% of the Cobra cost and you pick up 35%, which isn't so bad. My husband on the other hand can not qualify for that since he isn't layoff, he is just too sick to return to work.
You should also apply for soc sec disability.
Good luck