IMO, since you're on cycle your sperm production would not be at 'full capacity', so if your shooting blanks there is imo two points of action:

1) Either research the use of hCG (although this will prevent testicular atrophy) in cycle, thus increasing the possibility to ejaculate and produce more sperm
2) Stop your cycle, run PCT, get bloods to make sure your levels are in check and you're back to normal. This may be a viable option if you believe that juice and high test will give you birth defects.

But tbh, as long as your producing sperm (although it would be a more limited amount on cycle as opposed to off cycle), then I believe your child will reap the rewards. My research suggests that foetuses (foetii?) with high testosterone (measured by analysing the ring finger and the index finger - if the ring finger is longer, then the foetus was exposed to higher levels of testosterone in the womb) is beneficial, because high testosterone increases levels competition, and competition is good!! Success is driven by competition (I will elaborate further if needed). Also, females are automatically attracted to individuals who are fertile with high testosterone.

i wouldnt think it could cause birth defects.. but you could have trouble concieving as it can lower your sperm count... but like seinfeld said- if you have to be bad at something, it might as well be that

Iv gotten my girlfriend pregnant on gear and i worried to initially but her gynoclogist and her doctor assured her its wont affect the babies health, theirs alot guy on here who have had all healthy kids iv not heard of any complications , i cant explain the science behind why man but im sure somebody here can ...

I think its not so much a chance of a birth defect other than the test will probibly leave you shooting blanks...may want to wait on baby or end cycle early.