INS and deep vein thrombosis: On the other hand, while this was not the study objective, we found what is in line with other research [6, 13, 16], that is an association between obesity and the risk of certain complications during pregnancy such as prematurity, hypertensive disorders in pregnancy, gestational diabetes (both controlled with insulin and through diet), risk of premature birth, deep vein thrombosis, oligohydramnios and polyhydramnios.