Feeling broody and like I want to get married at 19 :/

I'm at uni and graduating next year, and due to having had to support myself financially and deal with serious family problems throughout uni I've had to grow up quicker than most. I'm 19 but sometimes I feel old. People say sometimes I come across as too serious and mature for my age; I'm not sure if it's due to all the tough times I've been through. Recently, stuff has been especially hard and I've only just recovered. I want to be more laid-back, but a lot of my friends have graduated this year and I've seen what a shock entering the real world has been to them. I'm worried I'll fall in love with uni life and take ages to get over it when it comes to real life. I'm very ambitious, and want a great career, but for some weird reason, I've started feeling lately like I really want to get married, build my own home and settle down (maybe even have kids) after I graduate as well as find a job (I wouldn't want a guy to support me while I didn't work). I've had my fun partying and making out with random guys in nightclubs and all that, and I love my uni to bits, but I feel like I already need to start thinking about the long term. Because I grew up in such an unstable family, raising a proper one of my own means a lot to me, but I'm worried that I'll waste the rest of my youth at uni thinking about getting married and such and never really just sit back and enjoy being young. What the hell is wrong with me? How can I go back to making the most of my youth and be hedonistic and party it up again, whilst still retaining my values? I'm Christian and quite a few Christian guys I know wouldn't even mind dating a girl at uni and are already thinking about marriage (they're a few years older than me), but I'm worried that if I end up with a guy like that and get married young I'll compromise my career and so on. How can I go back to being happy to be young again? How do I strike a balance between being the girl who used to pull a few guys a night and the girl who's the complete opposite? :S

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