6 to 7 dpo and have some questions.

Woke up this morning to some spotting and since yesterday i been having some cramps and my bbt went up from 97.6 to 98.1 since yesterday. Are this good signs or still to early. Here is a pic of my spotting fro. This morning. I have been feeling also so tired and little upset stomach. Its probably something else because i know symptoms likes this usually come later but its different in this cycle. Could this be implantation spotting and the cramps? When can i test?