youre just looking too much in to it. do you WANT mr january to be the father??? it seems like it.
physically it is impossible for him to be the father. add 3 months and 1 week to your due date and get an estimated conception date. i get february 8th. give or take a few days because i dont know how long your menstrual cycle is and that is based off of a 28 day cycle.
3d scans arent necessarily what your baby is going to look like when its born. you have to remember, it is all cramped up and smooshed inside your uterus surrounded by liquid. the 3d scan i had done of my 1st child makes his nose look like it spans from one corner of his mouth to the other.... but, when he was born it was the size of a tiny little button. a 3d ultrasound is NOT a photograph and only gives you a rough idea of what your baby will look like. your baby isnt even close to being done developing..... so, please, just stop worrying. its impossible for that guy to be the father unless you slept with him in the begining of february too.