Sacrum Pain Relief: Causes, Treatment, Swelling

Seems to be like you may have vertigo and a little bit of tightness in your back. Vertigo can make you feel like you’re off balance or that things around you are moving. As for the back, it could be from how you’re sleeping or sitting. Try to drink more water and stretch gently right after waking up. If this continues to happen, assess your sleeping position among other factors that may affect your general well-being.

Acupuncture helps in opening up the energy level ( commonly referred as 'Qi' in acupuncture theory).
Acupuncture needles are put on various parts of the body which helps in increasing the blood flow.
It has an anti inflammatory effect. It stops body's inflammatory response, increases blood flow and relaxes muscle tone. It helps in flushing out toxins from the body. Acupuncture releases endorphins which are natural hormones to reduce the feeling of pain and puts the patient in ultimate relaxed state i.e feeling of well being.
Electro acupuncture pulsates electric current through the needles.
Such procedure gives quick response and helps in reducing both pain and inflammation in people with arthritis.

It seems like you might have hurt your penis while you got hit by the car door. Pain, swelling, and bruising are not unusual in this case. The glossy skin could be a sign of recovery. Make sure you get some rest, wear loose-fitting clothes, and use ice packs to bring down any swelling. If these symptoms get worse or do not improve it would be best to see a doctor as soon as possible. 

You may have adhesive capsulitis, which is also referred to as a frozen shoulder. This usually occurs after an injury in the shoulder has taken place such as a car accident for example. Pain and stiffness are common symptoms of this condition thereby making it difficult for one to move the affected arm or arms. To alleviate these signs try gentle stretching exercises coupled with warm compresses applied to the painful area.