Pre pregnancy symptoms? Can you have early signs?

Me and my Boyfriend had unprotected sex Twice on August 7 and I was very fertail that day, Monday I started cramping like a period Tuesday as well and then today I feel like bloated and a little discomfort in my tummy, but Monday and Tuesday felt like period cramps.. Is that normal. Me and my boyfriend are trying to get pregnant sooo please help! I know it's too early to tell but I would like some feedback on this is this normal ??