Since you were single when you got PR and married after you got PR.....you should be okay to sponsor your spouse for PR.
Please refer.....Who can apply to sponsor spouses, partners or children and Who You Can Sponsor........on govt IRCC site.
https://www.canada.ca/en/immigratio...ship/spouse-partner-children/eligibility.html
Your PR landing paper is enough proof that you are a PR in Canada.
However, will advise that you apply for the PR card immediately.
Please refer.....govt IRCC site for Permanent Residency Card processing times.
http://www.cic.gc.ca/english/information/times/