Advice Please.

Candice • My husband and I`ve been married 2 wonderful years and now trying to start our family.
So my husband and I have been trying for 3 years. I just had my period last week and we had sex the whole time and yesterday I had some light pink blood on my toilet paper and then nothing at all. Could I have implanted?? I was off my period for three days and then this happened. I'm so confused and would like to know if anyone else has experienced this.