My fiance cheated.....

Not with one but 4 females and he say he haven't did anything but y are u telling them to meet you at your job n at hotels why when I texted her and told her u was about to get married she said tell him to stop coming over here and giving me rides to school I'm so over this shit

It it's true u can so everything for a man be he still is going to search for more so here I am this week about to get std tested I'm scared as I shouldn't be doing this because we are about to get married and I should trust him this is so fucked up

I can't think straight anybody ever been through is and how did u handle it I need advice I'm torn