anxiety

i feel like my anxiety starts to kick up right around/ after my supposed ovulation window & i start looking at every little possible sign that i could be pregnant. like right now i feel so bloated & gassy but i know its impossible for me to be pregnant at this point because i had an incredibly heavy period in august & have not had sex since may. i also have had two ultrasounds that prove i am not pregnant? so i don’t know why i have this anxiety that i am??? like the whole toilet was red at some points & it lasted for 6 days? why am i still stressing about this !!! why is my body acting so odd!!!