Been taking vitex 15 days now. I'm currently 2dpo tender nipples so I don't know if its the vitex…

Been taking vitex 15 days now. I'm currently 2dpo tender nipples so I don't know if its the vitex giving me the hormones or the vitex. Any ideas? Anywho im going online to buy as many hcg tests I can because I don't want to miss a day. I got a bfn at 5dpo with my 6yr old daughter. Sorry to seem compulsive but I am desperate1 here lol