Hi I Am A Mother Of A 1 Year Old

hi i am a mother of a 1 year old baby boy. Keep in mind i was born without a thyroid and that affects what i am about to say. but i have dealt with my thyroid since i was 2 weeks old and what i am experiencing has only happened since i have had my son. Since he was born i feel empty. i have no sex drive and i used to be a horny lil nympho now i just dont care.. it feels good but to initiate it is another story. i feel like i cant clean or do the simplest tasks. I love my son and would do anything for him but he deserves a mother that isnt stressed all the time.. im on probation from before i got pregnant. i have no motivation for anything i cant make decisions about anything. what i want for dinner what do i want to to.. i am constantly tired even after getting 8 hours of sleep.. I just want to know what is wrong with me.. can PPD last years after giving birth (which i did naturally with no epidural)