Pregnancy?

So I used an opk this month and found out i ovulated on CD 16.... My husband and I did the deed 2x multiple days in a row up to, on, and the day after the opk said i ovulated. I am now 5 DPO and my breasts are tender, my discharge is watery almost to the point I have to change underwear, and I have mild cramping. I'm due to start my AF 4/21/17.... I ovulated 4/9/17... Is it to early to test?