Someone look at my chart, need info (m)

Okay here is the deal. I had a D&C on 3/13 and I started temping the day before so really I am only on CD 16 not 17 like the chart says. Anyway. My DH was gone until yesterday morning so I couldn't BD before then. I took an OPK on 3/26 about 9pm at night and it was -. When DH came home 3/27 (yesterday) we BD about 9am. I took another OPK about 12noon yesterday and there it was + so I thought great we will have good timing since I thought I'd O today. Well just to see I took another OPK last night about 6pm and it was -. Then today I get a hudge temp increase. Here are my ?'s. Is there anyway to O before getting a +opk? I thought that it detected the hormone that caused O so if it were - the night before and then + 12 hours later and then - again only 6 hours after that did I O yesterday afternoon sometime? If so did we BD in time to catch the eggie? Should we BD again just in case? I usually have a slow rise pattern and have never seen a big temp jump like this. Normally if you look at my last chart before this one I have a big temp decrease like to 97.0 or so the day of O and then a jump a few degrees and then over the next like 2-3 days they go up more. I've never just had a temp go liket his. I actually took it early today at 6am and it was 97.8 and I adjusted it to 98.0, but even without adjusting it 97.8 is still alot higher than any other day after O temp I have had. Anyone have an thoughts. Did we BD in time? Oh geesh I can't believe I am obsessing already. Thanks for your advice. my chart is at www.fertilityfriend.com/home/1b884

Trish