I should be due my period this week !!!

Okay so on the 1st of July I had unprotected sex. I got the morning after pill as I did not have my usual pill with me.

3 days later after taking morning after. I got brown spotting. Then it would stop. I got small tinge of dark red blood then it would stop.

Last few days I have been really nauseated. I have weird fluttery feelings in my stomach and ovaries..

Please be honest. J am 20 years of ages. I don't want to be pregnant just yet.

I had this today. Do you think this is implantation or period..