My period was due on Monday and I still haven't gotten my period. So it'd 4 days late now and it's been like clockwork on time until this month. I took pregnancy tests and they all came back negative. I also started using summers <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> pH balancing soap a week or so before my period was to be due. Can pH balancing soap delay your period??? Me and my husband also had sex 3 times this past month and he ejaculated in me each time. But the tests come back negative.