we have had our medicals for fast track skilled worker...sent the fees..can we still get turned down if they find anything wrong with my medical results..as my partner is the main applicant...any advice appreciated

Why would you think there's something wrong with you medically? Is there?

Theoretically yes, the fees you have paid are to process the paperwork, not to buy a visa!

Unless of course you have paid your right of permanent resident fee, which would be returned if you are denied

I would suggest that if your husband's health was all that mattered there would ne no point in you having a medical exam. If you are discovered to have a serious medical complaint that results in an immediate drain on Canada's medical system, I'm almost sure you could be denied entry.

Yes you can. Especially if e.g. TB is detected.