Good day! ? Gestation period is 36 weeks. A dark vein has appeared un...

Good day! ? Gestation period is 36 weeks. A dark vein has appeared under the breast, about 1 cm in size. I have been experiencing pain and discomfort for a week now, including itching, cramping, and burning sensations. It started after wearing a new warm sweater that caused skin irritation and stomach cramps. Today, under sunlight, I noticed a dark vein under my skin where it's itchy. I suspect varicose veins? My doctor advised me to call an ambulance. But why would they need to take me to the hospital? I don't want to go to the hospital at all. Has anyone ever experienced something like this? The itchiness on this spot is unbearable...