Low Ovulation ? High Temps?

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Hi girls! So my fertile period has officially started and I have a question. I started testing with the Clearblue digital OPK on 5/2 and since then I've gotten nothing but negatives. I attached my last month and current month charts to help with my analysis. Should i be concerned that I've had 4 day of negatives and no high yet at least? I'm supposed to ovulate on 5/10 and I'm just hoping that this isn't a sign that I won't ovulate this month.

Another concern of mine is that my temp has been higher in the pre-ovulation period then last month. Last month my coverline was 98 and I've been hovering around there the last week or so. Last month I was mostly in the high 97s but so far I've been close to 98. I did miss a couple of days last weekend so maybe I was lower than I thought.

Thoughts? Anyone experience any of this?