And is there a chance my application could be refused from my side ? I'm getting my misdemeanor expunged and it should erase from my record in less than 5 months and is the refugee claim denial would get in the way of the sponsorship ?
Yes - it's possible your criminal history could be a problem and result in refusal.
Expungement generally does not remove the criminal issue from your record for immigration purposes. If your criminal issue makes you inadmissible to Canada, this will result in a refusal of your application.