How Long Does It Take To Ovulate After Coming Off From Depo Shot?

i have been off the depo since october 2010 and in december i had a period from 12/23/10 to 12/28/10 then i started up with spotting on 1/3/11 to 1/7/11 and now back on 1/15/10. i was on the depo for a year and a half. my husband and i would like to have a baby and have been trying. would i be ovulating yet or ?