I came on here to agree that you don't sound like you're really ready- especially if you want to have a partner to bring up your child with, which it sounds like you do.
I think some people on here have been a bit patronising though. I'm sure you are aware that having a baby involves alot more work than cooing about how beautiful it is.
I had my son at 20, he wasn't planned and I was far from ready for having children. I still lived with my parents at the time too.
You would, I assume have maternity leave to adjust without having to fret about working straight away?
DS' dad has been completely absent, I have had other issues, but being a single mum hasn't been one of them so don't let that put you off. You could look at sperm donation if you feel you want to do this alone.
FWIW, I have brought DS up myself, he is now 5. I have never wished I had a partner other than having to rely on other people for childcare a bit more. I don't have anyone to argue with and DS and I can just please ourselves. We have quite a harmonious and peaceful life, I get by financially (though I don't have to pay for childcare) with some spare money to enjoy things like swimming lessons and days out for DS.
I would say to give it more thought and of you still feel as strongly in a year or two then consider it more seriously. In the meantime, gaining some more independence, like getting your own place might help?
Just wanted to point out that partners are not the be all and end all, I am only 25 and have been celibate by choice for 3 years, I have no desire to find a partner and i don't think I ever will.