How to know when you ovulate??

Ok so me and my boyfriend do it a lot but I've never gotten preggo cause he wears a condom the right way and he doesnt burst(cum) in me or near my vagina but I wanted to know when I ovulate and when I don't ovulate so we can be a bit safer when we have...

sex ,we try to be safe as possible he wears spermicidal condoms and he dosn't cum in me or around my vagina ,so I acept any answers as longs as it answers it lol :]

I am pretty sure they sell home ovulation tests. you could try birthcontrol? or the sponge( I hear its not very affect) or even the diaphramgh*not spelled right I know* (also I hear is not very affective) but they are better than not being super safe. I hope this helpes a little

Peak ovulation time is 14 days after your last period, but you can get pregnant anytime of the month.

 
It is usually 14 days from the START of your last period. Also, since you are only 16, it might fluctuate a little, especially if your periods fluctuate rather than being exactly 28 days apart.