What are you going through right now and what advice would you give anyone else going through the same thing?

You can invest a lot of time and care into someone and yet, they will not think twice before discarding you. People can be ungrateful and inconsiderate.
I guess, there is no advice on this, you just have to cut your losses and move on.

My husband is cheating on me and my advice would be to never start a relationship with anyone.

Idk I'm sick and well that's out of my control, so even knowing I'm very wary of doctors, this time going to them to have a treatment is really helping me. So sometimes, not always is necessary going to the doctor. 😁
And that sometimes the best way to feel peace and better (in general circumstances of sadness), is retreating, taking time for yourself away from what caused you that.

Take the antibiotics.
Lol.