6 DPO, please read!!!

Hello ladies. I am now 6 dpo. I believe i ovulated on oct 7th, and I bd on the night of the 5th. I noticed a light cramping about 3-4dpo and it went away. Last night I cramped and today I've been cramping more than half of the day. It isn't as intense as af cramps. It is more of a spasm feeling along with cramp. Could this be a good sign? My af isnt due until 21st. My breasts are hardly sore.