Ive had an irregular period since march I got off BC after 4 yrs I've been under a lot of stress and anxiety my last period was june3 2010 and on the 1s and 2nd of July I started cramping and feeling like iwas going to get my period I had light pink on my toilet paper when I would go pee but then on July 3rd I had intercourse and it completely stopped then started up again on the 6th of July till today 14 of july2010 its light to were I don't have to use a pad but then when I have bowl movement a lot more comes out but that's it. Im trying to become pregnant so I bought a ovulation test kit but don't know when to start using it help!

You may want to try a pregnancy test first... although you can actually use the ovulation kit for this too. You could already be pregnant.

How irregular are your periods? This does make it more challenging for using an ovulation kit. You will need to use more test strips than if your cycles were regular. I would stock up on the test strips and just using them throughout the entire month to see if you get a positive result and take note of when that is.

It could be implantation bleeding. However you mentioned you have been under a lot of stress and sometimes that is the cause.