Getting worried!

Sara • 21, UK

I came off the pill last November and have had pretty regular periods ever since (one or two days late but nothing bad). This month mine should’ve come on the 20th, and were now on day 5 late. I’ve taken a test and it’s said negative but I’ve heard a lot of stories about false negatives and I’ve got no sign of periods or any symptoms of pregnancy.

Help me, any advice?!