Possibly pregnant ?

Lydia • My time will come 🥰🤞🏻 engaged 💍 ttc #1👶🏼

Me and my fiancé are currently trying.. I’m 17 he’s 19 is it possible that I might be pregnant? My period is due in 2 days and I’ve had slight cramping for the past week and my nipples were sore last week but now it’s my boobs and my back that are sore. I still have have cramping like a period but not bad. We had sex 5 or 6 times all the way up to my ovulation day.. I don’t feel any different but I’m not sure.. I have to pregnancy test one cheap one and a clear blue rapid detection.. should I take one tomorrow or should I wait till my period doesn’t come? I have really irregular periods too.