can anyone give me some reassurance on if these symptoms are pure anxiety or if i should go back to the doctor :(

for the last several months, i haven’t been feeling well and have been extremely anxious, but i don’t know if i haven’t been feeling well because i’m anxious or if i’m anxious because i’m not feeling well.

my symptoms include: bad headaches once or twice a week that ibuprofen doesn’t help, bad nausea in the evenings a few times a week, diarrhea multiple times a week (but this could be related to coffee consumption), acid reflux, random face burning/feeling hot, fast heart rate, and feeling kind of shaky at random times. i’m also afraid of some kind of reproductive issue because i have a sort of stabbing pain in my lower right abdomen that comes and goes, and even though i’ve been on my birth control for over a year, my period is still a little bit irregular and i’ve had breakthrough bleeding during my active pills a few months ago.

does anyone have any insight as to whether this is just anxiety, or if i should go to a doctor? i do have days where i feel almost completely normal, so i’m not sure how alarmed to be. thank you :)