My periods are irregular after I stopped taking birth control. Some times my cycle will be 24 or 26. My last cycle was 28 (it was a first for me) I started my last period on 19 January 2014 and I was due to start on the 17 Feb 2014( counting the last cycle I had) but nothing as happened yet I am 4 days late. I have been experiencing period like pains and white discharge, and sometimes clear.

If your periods are 24 to 26 days normally that is regular. Irregular would be a week off or more sometimes. Some women even miss a month sometimes.

Also 4 days late is not really even late. Could you be pregnant, of course, if you have had sex, you could be pregnant. But it is too early to test and most likely your period is just going to be late.

You need to wait at least 10 more days before you test, be sure to test with first urine of morning as soon as you wake up.