Infant Head Injury With Swelling. Done?

My 8-month-old baby girl (7 kg) fell from a 1.5 ft bed, hit her head (left side above ear), developed swelling. No vomiting, abnormal sleep, or pupil change initially. Applied ice packs, baby was active. On day 3, she had 102°F fever; new doctor said fever is viral, swelling may be due to minor skull fracture, and head will heal in ~1.5 months. Prescribed Maftal-P, Dolo, and Mindfull drops. That night she vomited once post-medication. Swelling now feels soft and jelly-like. Doctor said it’s normal fluid under skin. However, from day 4–5, we noticed she arches her neck and tilts head backward occasionally. She is otherwise alert and feeding. We’re concerned if the soft swelling or new head/neck movement indicates something serious. Should imaging or further evaluation be done?