Help! I need to know if I'm the only one...

Megan
So I'm 20 weeks today due with a girl and this is my 3rd pregnancy. I'm due April 8th. So here is the problem.... I went in for my anatomy sonogram this morning and they told me that as far as the baby goes she is perfect and wonderful, but my placenta is on my cervix. They said they will do another sonogram at 28 weeks to to see if it has moved. If it hasn't moved and doesn't move before I'm due I will have to have a c-section and I really don't want one mostly because I have a 2yr old that crawls on me and needs me to pick him up ect. They said 9 out of 10 cases everything moves and is fine... so is or has anyone else going/gone through this? Thank you to anyone with advice :)