It is high Estrodiol "E2" doing this and mose men that have done steroids have this problem. There are 2 things you can do see if your new Dr. will work with Dr. John and try and jump start your HPTA to make
Testosterone again. You can read how to do this with Dr. John at this site
www.allthingsmale.com.
Or get your Estradiol tested if it's high then take Indolplex/DIM this is sold OTC or get your Dr. to give you
Arimidex.
If you do the DIM get this brand I know it works.
http://www.ritecare.com/prodsheets/PHY-15336.html
Take one tablet at dinner time in less then a week you should get some morning wood that is so hard it wakes you up. This means you have your E2 down in the zone keep taking the Indolplex/DIM but if your wood stops stop taking it. I use wood as a gauge to not go down to low.
When the wood comes back go back on the Indoplex/DIM but cut the tablet in half. Keep doing this until you find the right dose. Between the wood and blood testing this works.
If you do
Arimidex you need to cut the pills into 4 parts and take on part .25 mgs every 3 days use the above info with your wood to dose. Some men need to only do .25 mgs every 5 days or more.
As to the way your doing your shots 300mgs is to much way to big a shot at one time most of the shot gets turned into Estradiol this is way your nipples acted up so fast. Try doing 100mgs every week or like me do 50mgs every 3 days using a small 27g 1ml x 1/2" lg. needle to shoot into your thigh. Doing this keeps you more stable and helps to keep E2 down.
Also get some Zinc/Copper and take this everyday it helps keep E2 down.
http://www.myvitanet.com/zincop100cnt.html