Vitex side effects

Hey everyone I was just wondering, did anyone who’s tried vitex have any side effects? I’ve been taking it for about a week & my boobs are killing me. & ive been cramping on & off for the last 4 days. I started it to try to get my cycle back after coming off depo but that has yet to happen. I’ve taken a test & it was a bfn I keep thinking my period is going to start but nothing. I just wish something would happen. 😭😭