I had a drain tube removed a week ago and its still draining, only now little blood clots come out. Is this normal?

When you get a tummy tuck the body fills the cavity with fluid which mandates the use of a drain for a short time.  Once the drainage has decreased to about 25 cc per day then the drains are pulled.  After the drains are pulled the body still secretes fluid but the hope is between compression (binder) and time the fluid secretion will stop.  A little drainage after pulling the drain is reasonable -beyond that requires a visit to your surgeon. 

Always best to let your PS know what is going on. It is common after drain removal for fluid to come out through the drain hole until it heals over.

After having your drain removed I think it is reasonable to have some minor bloody discharge. If this discharge remains persistent I would revisit this issue with your plastic surgeon to see if you can schedule an examination.