Is it weird I feel weird I'm not pregnant

Baisicly a while ago I lost my virginity and then my period disappeared wich was normal for me idk why it goes missing for months but then my stomach started hurting for days so I started panicking thinking I was pregnant and I didn't wanna be because I'm young but I did the test like 6 hrs ago and it came back negative and I was happy then 3 hours ago my perid started but idk why I feel like sum missing even tho ik I don't wanna be pregnant