Should I call doctor

So I don't really know how long my cycles are. I was on birth control for about 9 years so I really don't remeber what it was like before that. I got off birth control to start ttc and got pregnant right away. Now we are ttc baby #2. I had a cycle December 4-10 and January 6-12 (33 days later). Now it's been 39 days and still no aunt flow and still no bfp. What should I do, wait, call????