You definitely could have painful swollen veins in your arm after having your blood drawn many times. This happens frequently.
Varicose veins are veins that are swollen and sometimes painful. They may also be twisted and can have more blood in them then normal.
It sounds as if you have the start of blood poisoning from the nice insect that bite you. I suggest that you go to a doctor as soon as possible. If left to long it could have serious consequences.
You may be allergic to the fabric or a brand of detergent you might have used. The socks might just be too tight and stopped your blood from circulating correctly.
This can sometimes be caused by a blood clot in which case you should get medical help as soon as possible.
You will have blood in your knickers/panties and when you wipe. It can be painful and make you feel ill
It could be phlebitis, which could be caused by an infection. An infection leading into the bloodstream could be life threatening if not treated. That is called "sepsis" or "septicemia". A less likely cause for the swollen and painful vein could be a clot, and clots in the circulatory system can potentially travel through the blood stream causing a blockage. Blockages to the heart, lungs, or brain can be life threatening.
Yep
It could be a swollen capillary.
Well it could be because of your blood pressure, an animal or insect bite... There are several things that it could be, really.
See your doctor. The infection could lead to blood poisoning (septicaemia) if ignored.
DO NOT DO THIS!!! You will end up having terrible painful infections, and may have to have your dick removed if the infections are not controlled. When you have an erection, there is a lot of blood pressure in your dick . . . if you accidentally catch your piercing thingy and pull it out, you could lose a lot of blood.
Bladder infection.