This is your GP's remit, not sexual health.
If there are any changes to your voice continuously for two weeks (and longer) you're supposed to be given an x-ray to ensure there is nothing sinister responsible for this. It might just be laryngitis or stress, yes, the latter can effect one's vocal chords. If it is the latter you might be offered speech therapy.
However, be advised that some GPs are (unsurprisingly) useless with this. I had noticeable changes to my voice (and at times, I couldn't speak completely); it took my GP six months to send me for an x-ray.