I know exactly what your going threw!!!! I normally can't sleep that well myself, either bad dream's or I just can't get comfy or just not tired. I started putting myself on a schedule and it seemed to help, I will make sure that I am up no later than 9am, once I got used to that I started sleeping better at night, I have avoided long nap's during the day. But I know every woman is different, and thing's vary, I also started drinking "alot" of milk about an 3-4h hour's before bed, it seemed to help me.
As far as the biopsy I had one done last week actually, which has me freaking out "big" time, I am only 16week's and now I have read in several places that tampering with the cervix is not good while pregnant, they clipped stuff and it scared me. Mine was also considered cervical cancer, they called yesterday and said they want to do "another" biopsy at 28week's, I don't think I am going to let them:(.....I know what your going threw and it's so frustrating sometimes but im like you, I "love" my little one. I am already ready to kill anyone that messes with him..Lol...And he aint even here yet..Lol