I've just used my last clear blue advanced ovulation stick and have had 6 days of flashing smiley, now on CD26. Last few cycles have been 33 days but I think between the covid jab and the hysteroscopy I had a few weeks ago it's delayed it. What should I do now? Should I fork out more money on another cb test? Get cheapies? If not how often should I do the deed to make sure I'm covered?