Whats going on with me?

This is going to sound like a repeat of many pregnancy questions. I had sex the night before my period started (April 1st). He pulled out no rubber because I'm dumb. Since my scheduled ovulation (the 15th) I have had sore but not larger breasts, moderate cramping, a 100.1 fever (these are the only symptoms). Now the issue is that because of the stress I have been under lately from my job and moving, I have been gorging on Easter candy and ignoring the fact I should not eat gluten. Today Im in bed sick from the nausea and fever. I took two pregnancy tests (first response) this morning period is due in 7 days and it was completely negative. I have been pregnant twice before and miscarried each time. Neither of the times was anything this bad. Did I completely screwup my hormones by eating all that crap for three days straight and drinking a ton of soda (I drink a soda a month)?