How long b4 gyno sets in??

I' ve done my research but cant really find the answer i'm looking for.
How long is it before gyno sets in?? Can it be after you first cycle or is it after a long period of use?? Will you notice very quickly and what are the chances of you getting serious gyno after your first cycle?

I am doing a deca/dianabol cycle, 400mg deca/wk, 15-20mg dianabol/ed.

First proper cycle so i am a bit worried about the above.
Flame me if you must.....

Shit guys, ignore that. I' ve just had a good old look through the educational threads and theres loads of info there.
Sweet!!

The need for knowledge a??

When gyno starts setting in you will usually know it. Nips get sore, tinder, sensitive, itch, burning. Light gyno will show up as bloating around the nipple area or nips start to look alittle pointy.