Black high wasted skinny jeans

High waste skinny jeans brand new without tags when i bought them i found out i was pregnant and my waste isn't that small anymore they fit just not close from my waste size 1 the stretch could fit a size 0 i was a 0 before pregnancy now im a size 3 they can fit a size 3 with small waste my waste is a little bigger. Black brand new never worn i bought then for $45.99 at a boutique