Career vs family

I am a 23 year old first time nursing student. I will be finishing my Lpn course may of 2013. Currently I am on my second semester and passed the first with honors it seems I have finally found my calling. I am planning on continuing my education and going on to my bsn. However, by that time I will be almost 27. I was planning on going to the physician assistant program. But by doing that I will be 30 by the time I am actually done with school. Where does that leave time for kids? I just want to know if we really can have it all? I don't know if I am willing to sacrifice having children however I will not put my goals aside for one. Any other women out there who had to make a choice between a career and a family? Any regrets?
I didnt mean to send two posts... Oops... But I am interested in hearing from others with a few years on us. It is also important to remember what is right for one person, may be COMPLETELY wrong for someone else.
I'm 23 & have been an LPN for 4 years. I have been a military spouse for four years as well. I have had to transfer to a few different schools for my adn (because of my husband's changes in duty stations), and I finally have all of my prereqs done. Unfortunatly, my school's program is first.come, first serve, so my good grades dont matter and I am on a waiting list for the program. It is going to be about a year wait. I opted to apply to some other schools. Even out of state. I know EXACTLY how you feel. I am putting my career before starting a family. I hate that I will have to move away from my husband, but we have been through deployments, so I know that we'll be alright. It's just a weird thought that my going away is completely voluntary.... But I am a firm believer that you should follow your heart. I don't want to be an old lady and look back on my life with disappointment because I didn't take the opportunity to pursue my dreams. Another important factor is the support system that you have at home. My husband has been fantastic. my mom is ill, and she stays with us, so she loves to help. But, yes, I do believe that we can have it all. I want to be able to provide for my family in a way that wasn't available to me growing up. Follow your heart. Don't look back on your life with despair. Everything will fall into place. Good luck. (PS plz ignore spelling errors... I am terrible at usibg my phone lmbo)