Blood test too soon?

Okay so I have a 22 day cycle. The first last day of my period was 3/11. It is now 4/13, that is 33 days later. Last week I took 3 hpt and they were all negative. I also got a blood test on 4/9 but it was also negative. I’m worried that I got the blood test too soon? I still haven’t gotten my period. I’m supposed to start my next period on 4/24. What should I do if I don’t get my period???