What happened? My whole body is becoming itchy and bumpy!?!

I woke this morning and all of a sudden my chin was so itchy! I looked at the mirror and it was bright red from me scratching it! I don't know what happened. And I need some help to figure out what I did. Just now as I am writing this, the itch is growing around my cheeks. Is it from me being allergic from something? Because so far I looked back from what I ate and nothing was wrong. But one thing my mom suggested was this thing I got. Its called "Grow a Rose". And you put it on water and watch it grow for about 3-4 days. And I pick it up sometimes during the day and don't wash my hands after. And she thinks its from that... Another thing she might think it is, is this new kind of mousse we got. And now as I type this my left arm is becoming itchy and bumpy. SOMEONE PLZ HELP ME!!!!