does this opk look positive?

These are CD 5,6,7 and 8. Does the bottom one (cd 8) look positive to you? I feel like it's a big jump from yesterday, and it's so early! (My cycles are still irregular from stopping bcp but are on the longer side)
I'm going to see the doctor today, and I don't consider myself a great judge of whether these are positive or not, so any help would be appreciated!