I have had the paraguard in since April and my period has came every month the last 2 weeks and heavy and this month it hasn't came I tested yesterday and it was negative but I think it might be a little to early how common is pregnancy with paraguard and I heard a lot of bad risks come with a pregnancy with paraguard
With Paragard you may skip a month, be late, or start early when it comes to your period. Since it is non-hormonal, your body goes at its' natural pace.
However, Paragard is as effective as a vasectomy (according to my OB). Highly unlikely to become pregnant on it.