I was sterilised 7 years ago at 36 and I am currently experiencing symptoms of being pregnant. Very sore enlarged nipples, sickness, headaches, backache. I had my period nearly two weeks ago but although it was heavy for one day, only truly lasted 4 days instead of the usual 7. I had keyhole sterilisation, dont know whether this makes a difference. Has anyone else become pregnant after sterilisation such a long time ago? Help