twins pregnancy anyone?

from high risk, to UTI to gestational diabetes. what more can i have right. anyone has to give emself the insulin jab during GD? is the jab given to one-self on a daily basis? how many times a day? w the insulin jab still need to be on proper diet? how much price wise is the jab and insulin materials? im struggling w my diet. tried eveything but am often hungry. currently gg 27 weeks.