Question

I currently thought I was dealing with Implantion spotting. Situation.  My health app tells me that basically I need to stock up on pregnancy tests. I had a little bit of brownish blood during intercourse with my fiancé 4 days before my period. Breast are a bit tender and slightly fuller. No bleeding since then. Then today the same thing occurs, we have sex and a little bit of brown blood appears. As soon as it appeared it's gone again.