what is wrong with me?

hi guys im freaking out. i have a severe phobia of vomit and anything stomach related. sunday around 12-1pm i developed a bad headache and body aches and then napped and woke up and felt the same and started having low grade fevers (99-100) then the next day i woke up okay and felt better ish but then took a nap and woke up and had chills and had low grade fevers again (99.6-100.3) and then my temp in the 100s calmed down pretty quick they didn’t last not even 2 minutes and then i had the aches and then about an hour or so later i felt better and felt good and normal. today i woke up feeling better i had no fever since yesterday and no headache and no body aches but i did have stomach pain and eventually had one episode of slightly loose stool. ive had nausea ever since but i only had the one episode of loose stool and on and off waves of stomach pains, i’ve been able to eat and feel fine it’s just that. im so scared that i have some bug and that the worst is yet to come and im panicking very bad. i don’t know if it was some little like sickness bug or if it’s something else and i need help. what is wrong with me?