Sex regret and std

I’m pretty sure so have chlamydia, I regret the sex more than anything, especially now that I think I have caught something. I feel dirty and disgusting and just genuinely depressed. I’m only 19, I never just sleep with someone for the sake of it but this time I felt almost pressured to do so and I hate myself for it.

I feel like all I do is let people down, including myself. My mum knows that I’ve been the doctors and am waiting for my results and she’s been really nice about it, but I know deep down she’s disappointed, so am I, and that’s what hurts.

Idk how I’m going to get over this feeling, I feel extremely low right now, Lowest I’ve probably ever felt.

I need some advice or personal experiences to help me feel better so please help me