Parents found out I'm not a virgin anymore!

Hi, I'm 19 years old and I honestly don't really believe in god or anything, unlike my very religious parents. When I came back from college today, my mom showed me the plan b receipts that I was hiding and started crying. She said my dad fainted and they almost had to take him to the hospital. I had to lie my way out and a friend of mine said she got raped, to cover me, and I feel extremely bad for using that excuse...I don't know what to do my dad said he wants to go back to my home country I am scared and lost. I was saving up to move out, I don't have any important document on me, I don't know what to do. I feel like a disappointment I feel terrible.