My Last Menstrual Cycle Began On Oct 30. It Never

My last menstrual cycle began on Oct 30. It never came in Nov and still has not began this month. I had a tubal over ten years ago and I have been have some signs and symptoms of pregnancy. Could it be possible that I am pregnant. I also rec'd a injection in my spinal area due to arthritis on Nov 3rd, would the injection meds make me miss a period. Its my 3rd injection and my period cam like clock work as it usually does when I had those first two injections. What she I do? Should I take a pregnancy test or wait another month to see?