How accurate are ultrasounds?

they can usually tell pretty accurately in an early ultra sound when the baby was concieved because they tend to grow in same rate in the early weeks. So I would say most likely the dr is right about the date. Its about 3 weeks difference so it would be a big size difference in a baby that small. Most likely not yours but if you want you can always have a dna test done after the babys born

If an object is farther from a converging lens than the focal length, will the image be be larger or small?

If the object is at the focus then in theory the image will be infinite in size..! The further the object then moves away from the lens the smaller the image becomes.

Any one have free unused webkinz pet codes?

Sorry but the Webkinz I haven't used the codes for are being adopted on New Years Day. I suggest you save your money, Walgreens has Lil Kinz for $6.99

Best Headphones for $150-$170?

Alright so I just bought the Bose On-Ear Headphones for $159 and I'm looking for some alternatives b/c I know they are overpriced...I've heard a lot about Sennheiser and Shure, so I'm looking for some over the ear headphones that actually deliver at this high price range...which models should I look for? I'm big into b but I'm also looking for some quality at the same time. Thanks!

Is this normal for couples or not?

after i have with my gf, i am usually satasfied and tierd. i usually have a nice cold beer and go to bed. but i notice, my gf has more energy. shell finish herself off with a vibrator and afterwards rides a stationary bike. is something wrong here?

Period ended and now cramping with brown discharge?

Idk i didnt get my period all of january it was due jan 25th but i got it feb. 1st and it lasted til like the 6th or sumthn like tht.. now its the 12th and i realized i am cramping like period cramps and i have sum brownish discharge?? shud i be worried? idk whats goin on this has nvr happened to me.

Need good advice not put downs.. How do i tell my sister how i realy feel about her?

I guess it started at age 11 and she was 14 and now i lover her deeply. we would sleep in same bed and she would let me put my upper leg around her hip as we sleepd and i would get an . I feel in love with the smell her beautiful long hair and puting my arms and legs around her as we sleeped. When i would be in same bed with her if felt like my brain was melting and i could not controll myself from falling in love. Now im 15... i have deeper feelings for my older sister i lover her so incredibly...Now she hurt my heart in the worst way... And now inside i have fallen apart. Every night i go to bed i have emotional brake downs... looking at her picture every night wishing we could be together for reasons i dont fully understand.... Mosty nights i cant sleep worried she might fall in love with someone instead of me... All this pain and suffering over started from her boy friend of 2 months whom i hate with a deep pion.... I cant take to see them together... i kno i can treat my sister better then him. I feel like bashing her boys friends skull in with a hammer as he sleeps next to my sister every night... he took away everything from me. I feel if she ever fell in love with someone instead of me i would not beable to handly it, i lover he to much to see her with a differnt man. As i feel the clock ticking down....tick tock in my head... i cant bear to see them together... feels like im out of time to do somthing about her boy friend.... i just cant stand him any every minute im losing my chances of my sister feeling the same way about me.... Tho i do understand theres a chance she will never feel the same way about me... tho i feel most take a chance on telling her... i dont fully understand my emotions and why i feel this way. I guess i come on this website for... your guidance on this... sad screwed up story about my emotions that i cant control.