Smear test when pregnant (uk)

What's people opinions of smear tests when pregnant...I've had bleeding after sex for the last 10 weeks ...10 weeks pregnant....I know the cervix can change and this can cause it but I was due a smear in November last year after a chemical loss I put it on hold ...So it's overdue spoke to the doctor today she said yes it can be a factor of cervical cancer bleeding after sex or just iriated cervix ....she said to come back and get one done at the surgery in a few weeks ...I'm so scared this will cause a misscariage or something but I'm scared to sit on it incase it is a bad thing from being over due a smear :/