Indications of a hematoma
About 6 weeks ago my 6-month old daughter bumped her forehead against my wife's and a bump (about 8 mm x 8 mm) formed just above her left eyebrow. We didn't think much of it and thought it would go down by itself. A few weeks went by, the bump was still present and started to turn purple/red. It felt hard when I pressed it. Her pediatrician said it may be a cyst and told us not to push on it. Now the purple/red has gone down to just light red and the bump has flattened a bit (about 1 cm x 1 cm) but it still feels hard when I pressed it.
Is this something we should be concerned with? It has been 6 weeks and I am getting a bit worried. Should I put cold or hot compress on it? Or just take her to dermatologist or other specialist?