PLEASE HELP!

Im a white mother of my beautiful 3 week old babygirl. But im having trouble believing her father is her dad. I was single having fun and had a one-night stand with a white male sometime in the end of feb! and i know this sounds horrible, but i dont remember if he used protection. But note: he didnt finish the deed. we were stopped before he could climax.(but can pre-*** cause preganancy?) Then later i met the love of my life in March. my last period was April 5th. And my boyfriend and i were first sexually together on April 9th. which after we had sex... i started spotting(maybe left over bleeding from my period?) then i took a pregnancy test april 23rd... it showed neg. and i took one again april 28th and it BARELY showed pos. then May 4th i sarted bleeding really bad and went to the emergency room, were they told me i had a miscarriage. so 3days later at my follow up with my doctor, they informed me i was indeed still pregnant and had a bloodcolt that was trying to come out causing the bleeding. and maybe the emergency room thought i was miscarriaging because my horomone level was low. because i wasnt that far. so everything went great. i had a healty pregnancy and her due date was Jan. 6th 2008. which i had her Dec. 28th 2007. so all makes since that she would be her fathers baby(my boyfriend) but something keeps bothering me that maybe she is not his........... My boyfriend is a black male, (but is on the lighter side) he could pass for being biracial. but he isnt. So my baby would be biracial then. But she doesnt look like me. and looks white. but when she was first born looked like her dad by the features. but then just changed. and looks like an all white baby. straight hair and all.
SO... my question is... by the info. i have given is she my boyfriends baby? and if she is... is it possible that a biracial baby can look completely white!
I know a paternity test is the best way to know... but he loves her so much and i dont want to break his heart by telling him she might not be his... so please let me know your feedback.

[BabyHardiman]

How far along did they say you were at your first OB appointment?