Worried

Took a test on the 12th one was early response digital gold and the other one was just early response and it wasn't digital, both said pregnant and one had 2 pink lines and the other one said yes. Then today I take another one that's a dollar store brand and it has higher hcg levels then the others does this mean I'm still pregnant? I'm supposed to be 4 weeks tommrow. Help :( I'm so stressed out!!!!