hi yes it gets plugged after each period and gets a plug when your pregnant there is a chemical/hormonal reaction that lets sperm through. any eggs not used for pregnancy gets absolved into you body along with any unused sperm. are you thinking of a phantom pregnancy? this comes complete with a bump and goes the whole 9 months then just goes. hope this helps you. good luck
is the cervix normally closed even if you are not pregnant? . have taken five tests and blood work all saying positive for being pregnant but i am bleeding had a pelvic exam and cervix is closed so don't think it is a miscarriage but thinking it could be a false pregnancy and trying to get rid of a bad egg. needing an ultrasound but can't get one for another week. needing answers!