u/Candid-Meeting-9770

Need some reassurance!

For context I had unprotected sex (ejaculation inside) on April 8th and took a plan b the hour after! A week after that I had super heavy bleeding with clots for 5 days

On April 19tj I had unprotected sex again (pull out) with no plan b

Since then I’ve had no period at all (it’s May 19th) I am extremely nervous I’ve taken three pregnancy tests and all were negative (one on May 9, 13 and 17) with morning urine. So I think it’s fair to say it’s highly unlikely I’m pregnant but why is my period not coming?? I also have no pregnancy or pms symptoms