Am I Pregnant?

Kalen
 So I had unprotected sex March 6th. The first of my last period was Februaury 28th. My period was supposed to start March 27th. It didn't and I was supposed to start yesterday according this app. Now it's set to next week. My average cycle is 22 days. Now in the data it's been set to 43 days.
 I've been experiencing cramps like a period since March 26th. My nipples and boobs hurt. I've been feeling nauseous due to certain thoughts and smells of food. None of these are normal. It isn't some kind of placebo effect because I've had the cramping and sore boobs before even suspecting I could be pregnant. So based on this... What's your opinion?