Hi S.. I have always been like you. I never ovulate until baby is almost completely weaned, ie. down to probably twice a day. For me, that's usually been around the 11 or 12 month mark. I don't know of any way other than that to speed it up. Everyone's body is different that way. However, I can tell you that if you'd like to know when you ovulate, which may very well be before your first period, check out natural Family Planning ovulation method. You can find out more at your local catholic church even if you are not Catholic, or google it. It's also called the Creighton model and possibly some other names at this point, not sure. Or if you want some more specifics, message me directly, as it may be a little too graphic for some. There have been a few timeS I have gotten pregnant again before even menstruating. I am expecting #8 in April, and can pretty much pinpoint conception of most of them, due to this method. Good luck to you.
EDITED TO ADD: I would caution you against the low dose birth control someone else mentioned. It's actually supposed to keep you from ovulating, but if it doesn't, it tries to prevent implantation of the fertilized egg, so you could unwittingly be getting pregant and then aborting. A lot of people are unaware of this.