it is probably a dermo cyst. my daughter was born with that lump also. they said it would go away as she got bigger but to check it every now and then on both sides just to be safe. at six months they said that it would have to be removed. i thought it didnt move either but it turns out that it does move to them. they can tell more then we i guess. they will not do a ct scan cause its to much radiology to a small baby. they like to wait til after there one. however i figured for them to be sure its a dermo cyst and to do surgery they need to make sure of its debth and width before going in and doing surgery wouldnt u think? i want to wait til she is one if need be for sure surgery. as for better infection fighting. however doctor said they do that at two months old. they said it is more cosmetic and bothersome then problematic in health. however i learned that it can pop and cause an infection. always get your doctors advise before someone online even if they claim to be a doctor,nurse,rn,lpn,pa. i hope your baby is fine and its nothing serious. as i am praying for my daughter that she is fine. i am scared surgery. esp hearing that they do have to be put under and not awake as they would move around,ect. i kinda feel like i should do it before she is old enough to remember and leave some mental scarring as first yrs she probably wont remember it as they dont build a memory til age 2. i hope that this helps. i see you said u r scheduling an appt. let me know if its a dermo cyst.