Man, that sucks. Your prob is prob not permanent.
Some people have worse sides than others with deca. I cannot use it due to similar probs.

I do TRT as well. 10 days is a stretch for cypionate with a half life of 7-9 days depending on the source you ask. Maybe try 175-200 mg every 7 days. I do 124 mg every 7 days and my test it good.

A lot of times with deca, your Sex Hormone Binding Globulin will increase. SHBG will bind up test so it cannot act on the androgen receptor. Bets way to reduce SHBG is to come off, do PCT and then go back on test when your symptoms abate. Proviron has an affinity for SHBG and will bind to it leaving more free test for the androgen receptor.

Also prolactin can be a prob after deca.

I did a PCT while on TRT, I used 1,000 iu of HCG E3D until I used 5,000 iu, 50 mg clomid ED tapering down after HCG is done. Also cabergoline (for prolactin) at .25 mg every 4 days tapering down as well. This helped me A LOT! Caber can have some significant sides so watch for those.

Man I am spitballing, been 20 years since I cycled deca.

Last thing, if everything else is good, just get some cialis. Deca dick is not permenant.