Cramps

I ovulated on the 1st. According to Glow. I did see spotting and cramps which I took for ovulation. BD before and after O day. Af isn't due until the 16th. According to Glow. I have regular cycles. I've been taking FertilAid and FertileCM for almost a month now. With af 9 days away,why do I feel like she about to rear her ugly head? Are cramps normal if you are only 6dpo and pregnant? Not saying that I am because I know that its still to early to tell. Any Insight. ...