I had blood work monday. the nurse blew my vein and i have a large bruise now. i took my blood pressure 3 times in a row with no time between them on that arm and now it feels weird to me. is it ok?

This doesn't sound serious at all and the bruise should clear pretty soon. (Hard to know what "feel weird" means, but probably not serious. Psychological?)

This is an educational site, so in that spirit know that your blood was probably drawn by a Phlebotomist rather than a Nurse. Your arm may feel weird from bruising it taking your blood pressure 3 times in short order. As an aside why do you require blood pressure monitoring outside of a health care facility? Please speak to the Physician that suggested that you do so. Bruise will heal OK.