This is getting outta hand

Today I’ve been having muscle spasms in my stomach and diarrhea all day due to stress. I’ve been so stressed and anxious that I might be pregnant even tho we were completely safe and used 3 forms of birth control correctly (pill at the same time every day, used a condom the whole time, pulled out without being close to finishing). My period is due is 5 days so I took a test and it came out negative just to help ease my nerves. Has this happened to anyone else?