None period

Jade
Hi I just need some advice I'm always very regular with my periods and my last one was on 25th of may I started taking the pill that day but I only took it for 7 days and period lasted for 9 whole days! Month later and I'm now six days late I have a five month old baby already and me and my partner have hands full as we also have a four nearly five year old we always use protection but I'm really scared I'm pregnant any advice also on third day of missed period negative pregnancy tests