Depending on where you shoot up it may get infectied you have to watch it,i know a lady who got ganggren im not sure on that spelling anywayshe had to get part's of her arm cut off from the ganggeen and her leg's to you really need to be carefull when shootin dope.and as for std's i think it takes likea wk or so.
If i was looking @can you get std's from a needle well hell YA!!!Aids,std's there are ALOT of thing's you can get using dirty needle's and thease are just a few!!
of course exposure to blood by needle sharing can spread disease----If you MUST use a needle for drugs or whatever atleast minimaz your cance of disease or death and use clean needles. I am not knocking you---I have been there---