when will I ovulate

Laura • hi im laura we have a little boy who waa 12 weeks prem . i am currently wanting to start ttc.

Ok so we've stared ttc baby number 2 ! baby number 1 was prem and I came of the depo in April. I haven't had a period but had spotting a few days last week . I'm a first time user with ovulation tests . I know these are negative top is yesterday morning middle is this morning and bottom is late this afternoon . when will I ovulate?