Delayed Onset Side Effects or something else?

I had the second dose of HPV and Hep B vaccines about 3 weeks ago. Just a slight sore arm for a day and that was it. Easy.

2 weeks later I started to feel a slight bruise in the area. Day by day the pain grew worse and a hard, hot lump started to form deep in the tissue. 6 days later (today) and the pain is now significant and constant. I can barely move my arm due to how much it hurts. It is so sore I went to the hospital earlier today and they said "it is entirely normal" and gave me some ibuprofen.

Is this actually normal? The timings seem strange and it is only getting worse day by day for almost a week now.