injection question

[Tren Addict]

so this has happened a couple times to me. i put the needle in when i aspirate its all good no blood. now i finish and i leave the needle in for 30 secs ( because ive had gear leak out in the past). now thing is that i take the needle out and theres like i single drop of blood in the syringe is this a problem or did blood get in there when i left it in for the 30 secs. wondering if it means i hit a bad spot after all. what do you think

[TRE]

No thats normal. You aspirate to make sure you dont hit a vein.

[Da Bull]

your ok bro..if you hit a vien you'd know it.

[Mallet]

I can't remember the last time I aspirated???...that's normal bro!...your fine!