Ovulation help

[snowfee]

This is my first month using OPKs and tracking my BBT and I need help!
CD 8 BBT 36.1, didn't do OPK test (DTD)
CD 9 BBT 36.1 and really faint line on OPK
CD 10 BBT 36.3 and really faint line on OPK
CD11 BBT 36.1 and really faint line on OPK
CD12 BBT 36.1 and really faint line on OPK
CD14 BBT 36.4 and no line on OPK
Today is CD15 with BBT 36.4 and will do OPK after work
We haven't DTD since CD 8, have I missed my ovulation? The OPK lines have been no where near as dark as the control line I really had to focus to see the lines they were so faint. Is there still a chance I am yet to ovulate?
I don't currently track CM as I don't really understand the differences I need to look out for, I need to do some research on this.

How many days do you test on?

In your position, I would keep going until I get a stronger line or my period. You may ovulate later in the month than you think.

*how many days do you intend to test on?

(I just realised I didn't make sense)

Thanks @badtime for responding so quickly! I only started testing 8 days after my last period as I thought anything before that would be a waste of tests. I'll keep going and see what happens.
Do you know if the tests are less likely to react if I've drunk quite abit during the day? It looks quite diluted in the pot when I do the test in the afternoon.

I brought a pack of 100 tests so have plenty to keep testing with :-)

The control line should be fainter too if your wee is very dilute, but I would try not to drink much for an hour or two if you want to try a more concentrated sample (I generally did this).