Period talk help!!

In June I got a dark period and had a pregnancy scare, but it was around 3/4 days and it ended. Next month I had bad cramps and my period once again it was red and clotty than became brown. I was worried this could never be a chance of pregnancy right ?? Like no form of implantation bleeding or what not? Since its a period 2 months in a row

At first it came on June 21 than the period my next month came June 23 there usually off so I'm guessing I'm ok?