Confused and worried

[Kia5191]

Okay December 15 was my last period, come January nothing that whole month, so come February nothing until feb 14 I had sex after that I started to bleed. Does that mean I’m not pregnant or could it still be a possibility? Is it likely you can skip a month and start the following month?

[Chels976]

The only thing that will tell you if you’re pregnant or not is by doing a test chick, good luck x