HELP!!!!!

Okay so I’m freaking out, my s/o just left for deployment 3/15 and of course we had sex many times before he left. Well I thought I got my period and it only lasted 3 days and it wasn’t even close to a normal period. SOOO I need to know ALL the symptoms you ladies experienced within the first month?! They said it’s to early for me to take a pregnancy test and I have to wait till the end of the month to see if I get my period but my body isn’t right. I’ve never experienced some of the things in feelings and I’m beyond scared and nervous!