My Question Is I Am A 19 Year Old Female.

My question is

I am a 19 year old female. I just had unprotected sex on Thursday the 4th of June with my boyfriend who I have been dating for 1 years. The sex was probably for about 20 to 30 seconds, He didn't not ejaculate in me, it pulled it out as soon as possible and let it out quickly. I showered and quickly went to chemist and bought NorLevor ''morning pills'' and took it as soon as I got given it. I am really worried that I might be pregnant, I haven't been sleeping at night because I keep having trouble dreams about babies and I'm just over thinking and making it worse. I tried doing research to make me feel better, but everything I keep reading is freaking me out and I also went to my doctors the next morning and took a blood test. Should I be worried, will the pills work although he did not ejaculate in me and the I took the pills 30 minutes after. I was ovulating the week after and my period comes on the 7th of June. Please don't tell me something that's gonna freak me out. And I feel like going and buying another pills incase this one doesn't work.