I think I’m pregnant..

So on 7/30 I spotted and it was very light it was always like a drop or a few not a full on period. It lasted till 8/1 I had cramps off and on no appetite and nauseous and had sore boobs and sensitive boobs before spotting. have my period coming in a day on 8/4 but for the past week I’ve been nauseous, threw up a few times , headaches and I’m sometimes dizzy. Ive tested a few times and it still shows up negative... should I wait a week or a few days to test again ? I feel like I’m pregnant but since my miscarriage I will be doubtful till I see it with my own eyes.