Cervix measurement 2.9cm

Just wondering if anyone’s been in a similar situation please?

Had my first cervical length scan yesterday at 16 weeks due to treatment I had done on my cervix a couple of years ago.

Cervix was measuring 2.9cm, notes say long cervix and no funnelling and the consultant said everything looked good...she didn’t seem concerned and wants to see me again at 22 weeks just to double check things haven’t changed. Also saw the midwife yesterday afternoon and she was pleased with what the consultant had found.

Now 2.9 is a bit close for comfort for my liking, when the limit for cerclage or extra monitoring is 2.5. I’m just looking for people in a similar experience and what their care plan was please? I feel like I should be monitored more closely?