ya thats what my doctor said to me as well.
the blood type is incase your baby gets sick, you and the baby may not have the same blood type, so they find someone else with the same blood type.
i had a paper with the things that are done during the weeks of pregnancy, im tryign to find it now....the needle marks do go away, and if you get bruises, i think you are to tell the nurse who draws the blood..at least i saw a chart that mentioned something about that when i had blood drawn from my arm.
Your doctor would be the only one who can tell you if you are to have any more needles, i can't find the form i got with the info on it, but just call up your doctor. They wont think its a stupid question or anything, and you should say you bruise easily when getting needles, the doc. is the only one who can tell you whats next anyways, so just give him a call.