hey i just took my 4th shot ofsust about10 min ago and i think i injecteted in vien....whe i put the needl in i pulled back and i only saw air go into the syringe after i injected andpulled out it started bleeding and i hear tat i nomal...as i went to put the syringe in the trash i saw that where the needle and the syringeis connected there was blood inside...if i did it in the vien what will happn and what should i do