Hi everyone. Basically I have been talking to this girl for a while now, and lately we have been flirting a lot. She has said stuff like "I had a dream of us", and other stuff such as "you really make me happy when we talk", "I really really love talking to you" etc. For example yesterday we much fun,and at some point I told her "I am a weird person, don't worry, it's fine" and she said "Yeah, I will be a weird person too soon then
". Etc. In a few words, she shows many signs and she often tries to keep the convo alive by asking questions etc. She also laughs almost always.
Now, the thing is, sometimes I see her online on social media, but she replies a bit later. She is a med student and studies really a lot (she barely has much free time and studies until late night) but as I said, sometimes she is online let's say on WhatsApp, but answers to my message (we talk on WA) after maybe 30 minutes or sometimes even more. Why is that? It doesn't happen always, but occasionally. Yesterday I sent her a pm, but she replied to it almost a day later and she said "Sorry for not answering, I wasn't feeling ok, good morning". Now the thing is, she was online that day on WhatsApp a few times. I think she checked WhatsApp like 4-5 times, means she was probably talking to someone else. I forgot to mention that 90% of the times she apologises when she replies late.
Do you think I am overthinking it / worrying for no reason? If yes, why? Or is it normal to feel like that?