Sick and tired

Me

Of feeling sick & tired. I feel weak, fatigued, and generally unwell most days. I’ve been to the dr 4 times now. This has been going on to a degree since about 2 months postpartum and now my son is almost 18 months old. I’ve been told I had pp depression/anxiety..Zoloft didn’t help. All my blood work is normal. So why do I still feel like this 😔 I just want to feel normal & have the strength and energy to be the best mom I can be. Anyone else have anything similar or any advice? It seems like it got worse after weaning from breastfeeding completely about 6 weeks ago.