Post partum anxiety

Im pretty sure i have dealt with post partum anxiety since my son was born. Hes 6 months now and it has gotten better in some ways and some ways not. I would always stay awake at night and think about the worst things that could happen and getting scared about it and not being able to sleep. I would make my fiance wash his hands really well before holding our son and i would be scared to even let him make him a bottle because i worry that if he has something on his hands (he works outside and has to use harmful bug sprays and everything) and my son ingested it he would get sick or something. We also have a dog and i am too scared to let him in the house anymore because the other day he killed some kind of animal a mole i think or a rabbit and i worry about him getting rabies even though he has had his shots earlier this year im afraid hes gonna lick a toy or something and my son will put it in his mouth and he will get sick and die from it or something and i literally cant get over these stupid things 😩 i even only buy organic baby food because im actually afraid to use non organic because i worry about him getting sick or it causing cancer or something. I also only use natural diapers for the same reason. I know i sound freaking crazy but i dont know how to handle these horrible fears i have. Plus i just feel like if i dont give him the best i would be a horrible mom😣 i just need someone to tell me its okay to give him regular food and that it wont make him sick, somebody that feeds their baby non organic food. Ive tried to research but i keep coming across pages saying it can affect their development neurologicaly and they are ingesting all kinds of harmful pesticides and everything and that scares me ....