No, you should be fine. One shot shouldn't cause that much issue even if it's correctly dosed. But keep an eye on how you feel and don't let your mind play tricks with you.
Stay on your creatine all you like, nothing fancy and expensive and just 5mg per day.
You can use DAA ok but I reckon that money you spend on erase would be best spent on chicken on rice.
What are your stats? Age, height, weight, bodyfat, country of origin?