Scared of chemical pregnancy

So 12/28 I got a faint positive on first response, 12/29 got another positive a yes from first response gold. Then 12/30 got 2 negatives with clear blue. 2/31 today I went back to first response and got another negative. AF is still a no show after 2 days but I'm so scared I did something wrong or am having a chemical pregnacy that I cried my eyes out this morning. I have to work so can't go to the doctor til next week. I just don't know what to do...live in denial until AF shows up or get my blood work done.. Or face the fact this may not be pregnant. I just feel like I'm stressing myself out and I can't stop crying I just wanted this so bad it hurts.