No na, kissing doesn't cause pregnancy at all, that's biologically impossible. Just keep your mind calm, drink some warm ginger tea if you are feeling anxious, and if you ever feel any actual physical symptoms or pain, please go see a doctor.
Honestly, I am in my second trimester now, but early on I also had so many random questions because everything about pregnancy felt so overwhelming and scary! Did anyone else here also get paranoid about every little thing when they first started thinking about babies?
I'm also planning my pregnancy right now and reading up a lot on how conception actually works. It's totally okay to ask and clear your doubts, but yes, only intercourse during your fertile window can lead to pregnancy!
Beta, please don't worry at all. When I was staying at my parents' house during my pregnancy, we used to talk about how a lot of young girls have these innocent doubts. Kissing absolutely cannot cause pregnancy, so you can stay completely relaxed.
Absolutely not. Pregnancy only happens when a sperm fertilizes an egg during intercourse. Kissing has zero connection to getting pregnant, so you can stop stressing about this right away and read up on basic biology to feel more confident.