Could it be stress??

I have taken 2 Test one last night 6-11-18

& one this am 6.12.18. I’m only 19, I have been under a bit of stress, but I have been trying to relieve a lot of it and for the last week I have been pretty mellow. Both test were dollar General brand I believe. But should I be worried?? I have slight cramps & pressure, no period, I’m bloated, my breast feel fine, sometimes itchy?? I feel off and nauseated but, I take ADHD meds and those usually make me feel sick if I do not eat before taking them early in the am, I’m dizzy at times, tired, irritated so easily, lol I’m not sure what’s happening.. I feel like something is draining me.