i never read the other advice first, so i may be repeating what lots of others have said...
this is normal! you can be as anal as you have time to be and try to map it out (i actually had a color-coded excel spreadsheet to really see when my kiddo was eating (when she started/finished when she was nursed or how many oz from a bottle), when she started/ended a nap, when she went down for the night... i did this for over a month and it kind of helped me remain sane in a way. i had something to do, a way to keep track and try to be in control which i most clearly was not :)
while doing this, i started doing a little research online and found that most kids don't have a set routine till about 6 months and felt a lot better. my graph did help me SEE what, if any, patterns were developing and helped me to work to get her on HER own pattern. I also started to see that she was getting tired earlier and earlier and if i got her in bed for the night then, she did so much better. (she slept from 6pm-6am from around 5 months till she was 15 months or so, and is now more like 7-7 at 21 months w/ one 2 hour (or so) nap a day). her naps, however didn't fall into a routine till around 6 months and then it was like clockwork!
the funniest part of this is that when and if we ever have another child, that kid won't get the kind of respect for its routine that the first one did because, well, i'll have the first one around to chase after ;)
good luck and remember to breathe!!