Applying to Biomedical Science

Hey
I am in the process of apply through Ucas to Universities for Biomedical science.
Last year I sat both my Biology and Chemistry A levels and received two Cs, which was unexpected as I was working at at A/B grade level.
This year I am taking economics as I had to drop Computer science the year before.
I am predicted an A*/A in economics.
This leaves me in a hard place as for the majority Universities require at least Bs for Biomedical.
At the moment I see my possible options are:
Applying to Universities I'm not necessarily happy with.
Doing a foundation year.
Re-taking biology, however my confidence with exams is weaker.
Waiting to apply through clearing but not sure if more options will be available to me.
I am just really insure and not sure what is best.
Any help will be appreciated, thanks.