Mild Dyskaryosis NO hpv previous normal smears

Hello. I have so far had 2 normal smears, but my 3rd (I have attended all my smears, I am 31 and this is my third since they began testing me), Came back as mild dyskaryosis and no hpv? Is this something worrying? They have advised to go back in 3 years normal recall, however I think I’m going to go back in 6 months. Has anybody else had this result and it turn back normal? I also don’t understand why previous smears were normal yet this one abnormal ? I had my daughter july 2015. And this smear just slightly over a year later ? Could it be hormones? Many thanks