what should I do? please no negativity...

Alright so I'm 16 and lost my virginity yesterday...without protection...and I don't want to tell anybody because I'm to scared, but the <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> app and my close friends know about this now. What should I do if I don't tell any adult? I'm so scared... And after we did it he left and now everytime we try to communicate he just says it's whatever to every one of my messages...and now I don't feel comfortable with him anymore 😕