TTC after mc and chemical pregnancy

Hi all!

So I’m about 5 days away from

My period in my 2 week waiting period. Lately my appetite has gone up, my sciatica has been acting up a ton (not usual for me aside from during pregnancy) and breasts have been tender and heavy. So many people have said that we can produce our own pregnancy symptoms and psych our bodies out when we’re TTC but can it be that my sciatica and other symptoms are mental??? I’m not trying to put pressure on it but just curious as to people’s opinions....