I understand its hard going past your due date. The last month of pregnancy is a B. But if you had a cerclage I'm assuming your Dr was concerned about pre term labor? So if that's the case focus on the positive that your baby will be full term and hopefully won't need any NICU time. Also labor could start anytime or your Dr may induce you at 41 weeks.
I know by the time you reach 40 weeks you are so ready to meet your LO, however your baby will let you know when its ready. My 1st pregnancy i was 14 days overdue, they induced me and my DD arrived 16 days past my due date. Be patience not long now.
Re: 3 weeks post cerclage removal and 3 days post due date
According to Harvard University and Bradley Method Childbirth, actual human gestation is actually 41w1d, not 40w0d.
And due date is just an estimate, not anything set in stone. Up to 2 weeks before or after (so any time between 38-42 weeks) is normal.
You won't be pregnant forever.