I'm a 24 year old guy, and this problem has been concerning me a lot especially since this isn't considered 'normal' at my age. For context, I'm decently healthy but have an existing hypothyroidism condition(but have been on medications for over a year now and my levels are stable).

So my condition is, I can't last too long when I penetrate. My erections are strong, and I don't have an issue lasting when its just oral, but somehow as soon as I penetrate a woman, I become overly sensitive and if I'm not careful about going slow, I ejaculate within a few strokes which gets super embarrassing.

On top of that, it also takes quite a while (sometimes more than half an hour) to get a second erection. Again, I don't feel it should be that long at this age. Its not a once in a while issue either, this happens every single time.

My question is, can this be a case of just being naturally too sensitive, and if yes can anyone suggest any natural techniques to solve this? Any tips would be helpful, thank you!