The weight of motherhood

I, F (25 years old) recently became a mother and I have all the help in the world, my husband is an excellent father and everything has been going well, but even so my mental health has deteriorated a lot, I keep flirting with the idea of ​​suicide, my son It's already 3 months old and I think it's been too long for it to be postpartum depression, I don't know if it's the confinement or the weight of the responsibility of wanting to be a good mother... Has anyone felt this? What did they do to improve?