There’s no doubt that the invention of the oral contraceptive pill (often simply referred to as ‘the pill’) revolutionised women’s lives and enabled them to be in control of their fertility. However, many people wrongly assume that it’s 100 per cent effective and in theory it should be. In reality, it’s not. In fact, in the course of a year, between 5 and 8 out of 100 women taking the pill will have an accidental pregnancy. That may sound like an alarming number, but it’s actually far better than other forms of contraception – nearly 20 per cent of women using condoms will still become pregnant in a year.