12 days late, 4 neg hpt. whats goin on?

[Supermummy25]

hi everyone looking for a wee bit of advice i usually have a 28 day cycle..its like clockwork. however this month my period just hasnt arrived. i am now 12 days late, have done 4 preg tests which came back neg. the only time i have ever been late is when i was actually pregnant. i am startin to worry that something is wrong. t.i.a xx

I had many negative tests when I was pregnant with my son, try to stay as relaxed as you can but if you're really worried I would go to the Drs.