or I am PMSinng but I just got into an argument with FI.

Dammitt!!! I don't even know how it became an argument!!! I am pissed and him and me!!! So he was telling me that he talked to his mom and she was telling him that she talked to me etc etc a week earlier and she tells him...Well I thought you told me that you won't be getting married until she is a doctor!! and He goes and said, well do you see me married to her yet??
Of course, I have been looking at alternative dates since we won't be able to do 101/11 and the only dates I can think of was 6/16/2012 (my bday) or 3/23/13 (Our 12 year anniversary). Of course I like our annviersary date better and I was thinking 2013. Plenty of time to go. So I asked him, did he just say that to his mom becasue he doesn't want get into it wither or is he actually serious?
I have no immediate plans for applying to medical school and its still probably going to be 3-4 years before I do. Well one thing led to another and he suggested 2016, while he says he was kidding, I don't know it really seemed like that is what he wanted.
We have discussed this before and decided waiting too long is pointless till after I am done with school and all and we can do all of those things while we are married. So I asked him why he wants to wait and if it is really important and worth waiting for, then I will wait? What's another couple of years and he says that he needs more time to save money!!!
I was so peeved to hear that!!! Money!!! I get it that it is good to be financially stable but I don't know what he is looking for!!! Both of us are saving for a house, which is right on track, for the wedding which is going well, and I even saved enough money for a decent down payment on a car for him becasue I promised him that for his Bday when his car is going to start dying (The car is dying, it can't survive another Chicago winter). I am working full time, so is he. While I don't make as much as I should, its pretty decent and my boss already has been hinting at a promotion come August. Student loans are being paid, etc etc. I am thinking we have it pretty decent and are right on track with our goals.
I know that it will be just one person working when I start medical school, but I mean we plan on putting more than enough to cover us in an emergeny. So why do we need more money and why can't we just keep saving and how is the wedding going to ruin his whole saving more money...What am I missing here?
So we weren't really arguing or fighting but there is definitely tension now. Then in the end, he says I guess I see no good reason why we can't get married in 2013, but now I feel like I just forced him into something that he doesn't want to do and I told him that and I just couldn't talk to him anymore after that because I really wasn't sure what to say.
He called after a little while later, to apologize and that he really wasn't to make me mad on my bday and that if I was mad at him.......I told him no I wasn't but I really didn't have anything else to say in that conversation. Oh, he also called to check if I was crying or not.
Sorry ladies it was so long but I thought I knew where both of us stood on the issue but now I feel like he wants to wait longer and I am the one who is forcing him to do it early. I don't want to be doing that, but I feel like I already did it wthout realizing. I just needed to vent so badly!!! I don't even know what to say to him!!