Nervous

Since my chemical pregnancy in February I have had periods but also where I skipped a whole month but wasn't pregnant. Fast forward to now I found out I was pregnant on Labor day and my last real period was in July but the week before labor day I bled for 2 days but not enough for a pad but enough to be like wtf? I went into a free clinic the 3rd for a confirmation test then yesterday I went for an ultrasound the lady was a volunteer and said she saw a tiny tiny blip of something so maybe I'm 5 weeks along... she scared me she looked confused because my tests have been positive since this sunday.... hopefully something progresses... any word of advice???