Hi, Your symptoms are natural at this stage of pregnancy and given that you have gestational diabetes, you may have hypoglycemic episodes as well. The pressure is most likely due to the descent of the baby and this being the third pregnancy, you may deliver earlier too. I would ask you to report the matter to your consultant and take advice. Meanwhile try to relax and rest in left lateral position. As the baby is mature there is no harm if you deliver now. Hope you find this information helpful. Wish you safe motherhood.