Can I extract gene sequences from mapped reads?

I have mapped Illumina paired WGS against a reference genome. By using locus ID of gene I extracted a bam file (gene.bam) of that gene from my mapped reads. Now what should I do next to extract complete sequence of gene from gene.bam file.

I have Locus ID, protein ID, Chromosomal location of gene in reference genome and reference genome annotation file, and the size of reads is 90 bp.