Hey,
first of all, calm down... Because I dont think you should be scare or worried. To notice the sign of being pregnant is:
morning sickness
breast soreness
weird craving
bathroom alot
fatigue (almost all the time being tired)
headaches
or a mild/strong cramps.
And just wait til your period is due.. And if it doesnt, then get it tested. Ept is not always accurate but you could always go to a clinic (planning parenthood) do offer for free (i hope) lol and you will be fine.