Its nothing 2 worry about yet it takes any thing like 3-14 days b4 shown any signs of sex and when it does the male sacks will not pollenate stright away so u have time 2 i.d. the male with no worrys ,
1st check in the faq to find out wat exectly you need to look for or post some pics on here and im sure you,ll get sorted out
Best not to fuss over them to much like i did when i was begining things dont just change over night have patients with them and let nature do most of the work
take it easy ...........................