Opk, bbt, dtd?

Hi! This is my first post, but I've been trying to read up. This is the first month that I have been less forgetful and accurately charting and testing every day.

Yesterday (Wed) I got two positive opk strip tests and this morning (Thurs), my temp spiked. I opk'd every morning and again early evening every day this week. I did this because historically, I've noticed the surge starting afternoons or evenings.

Two days ago (Tue), both my opk tests were negative and, then yesterday (Wed), both opks were positive... so I thought I still had a day or two before I would ovulate.

1) We DTD last night (Wed). Should I try and DTD again today and or tomorrow?

2) I did opk this morning (Thurs), again, and it was negative. I think that means I ovulated sometime yesterday afternoon or evening? I am a little confused because it seems like my LH surge occurred a very short time before the time I actually ovulated. If I don't get a BFP this month, should I try doing the opk 3 times per day a day before expected O? Maybe I missed it and the surge started Tues evening after my 2nd opk?

Thanks ladies xx