Hi, I Have A Few Lumps In My Head, I

hi, I have a few lumps in my head, I got a CT scan done 3-4 years ago, doctor said its nothing serious, just the skull formation. he also said that the number of bumps and size may increase over time but as long as it doesnt hurt, there is nothing worry.
Number of lumps have increased and so has the size, I am worried though. Please advise.