don't worry, I got rejected from 6 unis when I first applied for physio- loads of people experience this! I did a sport science degree, got lots of work experience and applied again as a mature student on the MSc course. I got into that course and graduate this year

The shear volume of people that apply for physio is probably the reason you got rejected. Even with 3 excellent A-levels and work experience people still get rejected, so don't blame yourself! What grades did you get at A-level? Why are you doing a foundation science degree? If you can, I would do a sport science or sport rehabilitation degree. This looks good on your application that you are committed to doing physio and are doing the neccessary degree's to get there (eventually!). You could also do some courses like sports massage etc...

Otherwise, you could always re-sit your A-levels if they are not brilliant. The other alternative is to try and get a job as a physio assistant or health care assistant for 6 months or so, this also looks good on applications.