I've had my conure for about a month now. He was nice the first couple of weeks, a little nippy but not bad. This past week though he has been drawing blood. He does it any time any where, so I cant figure out what has changed. This is my first pet bird so tI'm clueless when it comes to understanding their body language and noises. Whenever he would nip I would keep my tone normal and say no bite and put him down. A couple of times it hurt so bad and he wouldn't let go it was impossible not to cry ou. Also I'm not sure how old he is, he was surrendered and the place I got him from thought he might be around 2. Any advice?
It's not him, it's you.
There's your answer in bold above. The first few weeks he put up with you being clueless and not listening to body language. After a time he knew you weren't listening to him and he'd have to be more obvious trying to communicate with you. Hence biting, which you FINALLY noticed!
You need to get with it, and now it will be harder to let him know you are listening to him.
Check out Barbara Heidenreich website and youtube. She does positive reinforcement training aka clicker training. She has examples of body language. Then if you do clicker training that will get you and your bird communicating and working together in a positive way.
If you post video of a body language we can sometimes tell you what it means too.
Also - what kind of conure is he and his name please?