If anything the androgenic sides will make your manhood bigger brah! Kinda like the noticed enlargement of the female sex organ (clitoris) when they take superphysiological doses of testosterone.
You might have felt a drop in sex drive - it can happen... even with testosterone only, but it should spring back soon... and then some. The first few weeks the compounds are just starting to take over your endogenous production (some prefer to frontload to really get blood levels up, right out the door). This could also be a mental thing... and the percieved shortening is just less blood flow then normal due to a lowered libido. Also - your TE could be Deca... sorry to bring that up - hope you know the source well...
As long as it is TE - you should be a walking hard-on within the next few weeks...
