Is pregnancy still possible?

Doctors confirmed I hadn’t ovulated by mid day day 19 or 26. The last time we had sex was on day 24. I’m now on day 36. Still no period (I was due on day 35. Is it still possible to be pregnant? The reason I ask is I haven’t been late since having my first baby 19 months ago. However this may be the first time I’ve not ovulated. It’s all driving me crazy! Just wondered if anyone else has experienced this or has any advice?