I am facing a problem regarding bpsk modulation!!!

I have written a code that modulate three bytes of data the modulation is Bpsk.But the issue is fft shows that the carrier which i generate having peak at my desired frequency while the fft of modulated signal have peaks at center freuency along with near by freuency is it ok??? Second thing is which confused me more that algorithem which i follows does;nt ensure that message data bits have any frequency kindly help me in this regard.i have attached my code along with fft of carrier signal and modulated signal

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