For those OPK tests the test line needs to be darker than the control line for a positive. Those are definitely clear lines, but definitely negatives.
Regarding your temp rise on day 6, this is just that a temp rise, it will need to be sustained for a few more days before you can call it tri-phasic.
My temps always are higher around day 7 and 8. It has never made it tri-phasic. As the progesterone rises, it reaches a peak between days 6 to 9 dpo, and this rises your temperature accordingly. Whether your temp drops before af or not, is random, at least for me mostly I get a slight temp drop the day of af, and then a proper drop a couple of days later.
I know I might sound a little negative, but I am trying to be realistic for you. Implantation at the earliest is 6 dpo and so showing the start of triphasic at 6dpo is not usual, it is normally later in the cycle, around the time you are expecting it to drop at the end of your cycle.
Another little warning of where I have gotten hurt before, you will possibly get a true positive opk just before your af arrives, this is normal, an LH rise occurs not only when you ovulate but also just before af. So I would say having got a clear temp shift, stop using the opk's. You will always get a positive pregnancy test before you get a true positive on opk's anyway. It is a waste to use them at this point, they can't tell you anything.
I am not saying that you are not pregnant, you can't know yet, hopefully in a few days you will get a positive hpt.