Is he mad, or am I overreacting?

My boyfriend and i have been dating for about 3 weeks now, he recently posted a picture on social media with a caption saying that nobody can be trusted and at the end of the day you only have yourself, i texted him and told him that i was here for him if he ever needs somebody to talk to and he replied with "k", i sent him a goodnight text like we normally do and he opened it this morning and didn't reply? He normally sends a goodmorning text anyway... am i over reacting or does this sound odd? I normally worry a lot and i tend to blow things way out of proportion.. I don't know what to think
Is he mad, or am I overreacting?
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