No period but no positive pregnancy test.

Coco
I went off birth control in May and had a 27 day cycle and two 28 day cycles. This month I am on day 41 and haven't gotten a positive pregnancy test. Two questions. 
Is it possible the pregnancy test is wrong. I thought I was going to get my period 2 weeks ago (cramping) but those are the only period symptoms I've had. 
If I'm skipping my period this month is it still possible To conceive? Should I still take my ovulation tests? 
Really confused and any insight would be greatly appreciated!!! Thank you!!!