13 weeks today..

Congratulations,
I am really happy for you.  When your baby first starts kicking, not really kicking like 6 months kicking, but at your stage, it feels like a butterfly flapping its wings inside you.  I hope this helps you minimize your fears.  I dont know you or anything about your situation or if you have any health problems but it is amazing to carry a life inside you.  I wish you the very best.  
If you are a high risk pregnancy then you will feel scared at times.  I had a high risk pregnancy and everything turned out perfect.  I have a girl friend that is 43(high risk) who just had twins, thought she was not able to have children and surprise, the docs were wrong.  She delivered 2 beautiful fraternal twins in June.  No problems, just wonderful.  Congrats again and keep us posted on the progress.  It can be the most amazing time of your life and if it is your first, you will never believe how deeply you will love your child and how natural taking care of an infant is.  I think I was most worried about that with my first pregnancy, how will I know what to do? when? I was shocked at how easily it came, like I had known it my whole life but never used it.  It will be trying at times but it is also the best time of your life.  Some people say that college or HS is the best time of your life, but I think being a parent is the best time.  I have a son leaving the nest in 3.5 yrs, off to college and a daughter 2 years behind him.  I will miss them but my job is to prepare them for the world, from understanding fiscal responsibility to socialization skills.  Enjoy as much as you can now, 2nd trimester is the best, 3rd trimester gets you ready for the hours of being up at night with your baby by having to get up and urinate at night and 3rd trimester is harder because of your size and lack of sleep. 3rd trimester is great though, feeling the life inside you kick, really kick.  Talk to your baby all the time, sounds silly but they will know your voice when born by hearing it in womb, and try not to dumb yourself down to talk to them.  If they dont understand they will ask or you can explain.   It enhances their vocab from the start, it also makes them believe they are worthy of not being talked down to which will effect their self esteem. Now that I have teenagers it is starting to be really interesting with my husband.  Talk to your partner about raising your child, do you want to raise the baby the way you were raised or do you want better if your childhood was encumbered by alcoholism or mental health issues.  I believe above all else Tell Your Children the Truth.  If you lie to them to protect them from the outside world and they find out that you lied to them, they will question if anything you told them was true.  Lying is not acceptable, even if it is to try to protect them from the world we live in today, it only makes them naive when they leave the nest and they lose the trust they once had in you.  Honesty is really the best policy.   Dont you just love getting advise from people you dont know?  I know what has worked for my kids and they have turned out great, imposing boundaries, rules and consistancy is paramount.  My son was one of 100 students chosen out of 130,000 to be admitted to the International Baccalaurette Program in the city in which we dwell.  Both kids are 4.0 students and test in the 97-99% on standardized tests, never been in trouble at school, or outside of school and are healthy happy kids.  By the way we have let them determine whether they believe in any religion, I was brainwashed, force fed, and attended Catholic schools my whole life.  I would never put my children through that, fill them with guilt from some original sin they were born with?  When they are older, have done research on comparative theologies, then they will be in the position to make a determination as to whether they will choose science and facts or faith.  My best wishes and warmest regards go out to you.  Lanaiwahine