Guy I liked ignored my bday message for him?

He and I had been texting for a couple of days when an app notified me it was his bday. He asked about a program I am in and I replied that I had to drop out of it, but would tell him all about it after break (he's visiting family out of state). Then sent him a happy birthday message. I sent a sticker/gif thing and also said that I hoped that he had a great day. He ignored it completely and started asking about why I dropped the program. He never acknowledged the bday message and I was too nervous to mention it. Is it weird that he ignored it or am I over thinking?

Guy I liked ignored my bday message for him?
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