Am I out?

My cycles last usually 32-35 days, 41 being the longest. I'm on CD 37 and no sign of af. Don't test for O but dh and I BD quite a lot last month. I spotted a few days ago. Literally like 3-4 drops of pink. This morning I threw up out of nowhere and was sure I'd get my bfp today. Took a first response gold.... negative. Opened it to see if there was a faint line or anything. Nothing. Also I'm on vitex. Do you think I'm out this month... or it's possible? Please send words of encouragement. I'm dying over here waiting for af or, even better, a bfp.