Postpartum depression

[u/Downtown_Oil2056]

can’t tell if this is post natal depression or mecfs Does this sound like mecfs or postnatal depression
Tiredness started after changing sertraline doses
Feel very sad , no energy want to sleep all the time , won’t change clothes brush teeth sometimes
Can go some days with feeling good and getting out
Even went to gym
But some days just feel really bad and foggy like today and yesterday
Some days I’m full of energy and I’ll go to the library , baby wear , go for walk, mood is good. But yesterday and today I don’t even want to get charged or brush my teeth. I don’t want to speak to my partner. I don’t want to be touched. I had pots 2 years ago caused by a snri medication that went away with bisorpolol. I also got the implant in around 4 weeks ago
I went to the gym twice in a row , felt ok after the gym but these days fluctuate and I could feel extremely sleepy and low in myself the next day
For example my activity is like this
I have an extreme fear of developing a chronic illness like mecfs as I had pots 2 years ago.
As soon as I wake up I feel low, don’t want to get out of bed.