Hi, I used to donate plasma regularly, twice a week, it has been 2.5 mos. since my last donation. The last time few times I donated, my veins kept reopening after removing the two-way needle so I requested them to use another vein, which they did. The vein was a side vein and ever since, I have a deep pain in my arm. For about 3 weeks afterwards, my vein was really hard and very raised all the way down my arm. My question is, is there damage to my vein now?