Confused ladies-long post lol

Sara
So af wasn't due for 5-7 days and she is slowly showing I think. I'm just confused because I tested with opks cd 10-14 and didn't get a positive. It was also right around Xmas so I wasn't testing the same time every morning. So this cycle is a 26 day cycle which is normal (usually mine are average 28/29) but still normal. I guess I lose the surge and I also am a little skeptical about the digital advanced reader because I had no issue the previous cycle. I got a positive cd 13 that cycle. 
So hubby will be away the 14th-22nd and I'll be away 1/28-2/2. I normally ovulate between cd 13-15 so maybe we can bd a good amount and see what happens. Not worried about it though since we will both be away a lot. Thoughts? Should I use opks or just bd the day we are both home? I feel like using opks is a waste because if I get a positive and he's not home then it's pointless. This calendar is predicting I will ovulate a little later but I don't think so