Morning Sickness or going crazy?

So this month we really focused on timing ovulation and BD on the right days and I am really hoping that our problem all along has been poor planning and bad timing. So i'm pretty sure that I ovulated on Jan 16th and we BD like crazy all around that day. Then I was laying in bed thursday night(21st) and for some reason daydreaming about sushi and fried chicken LOL and then out of nowhere I was hit by a strong wave of nausea and came very close to throwing up in bed! Then the next morning at work I was hit by wave after wave of nausea and almost had to run to the bathroom (didn't happen thank goodness). Yesterday and today I feel fine though other than the fact that I have to pee every 30 mins or so. I actually feel the need to pee and then when I get to the bathroom not much happens. I knew it was too early to test but I have 2 tests that came with the OPK i bought so I used one on saturday and it was negative. I have read of some ladies getting positives quite early and I thought it couldn't hurt to check. Anyway I have had 2 m/c at about 5-6 wks so I want to know as soon as possible so that I can start progesterone treatment right away and go for an early ultrasound to make sure it's not ectopic. My doctor suggested that after my last m/c.
So I will be patient and test again probably next weekend when AF is actually due, providing she doesn't show up before then.