Thoughts?

So, my last normal period was on February 13, I then started spotting around three weeks later, March 8 to be exact, I suspected it to be implanting bleeding because it was ssssuuuppper light. I needed to put on a panty liner but not change it throughout the day. & I did start feeling nauseous. Didn’t bother testing though until this Tuesday and I got a positive. I mean yeah I won’t know for sure how far along I am until I get an ultrasound, but according to the app I’m just about 6 weeks. Could I possibly be further along??