Am I pregnant ..?

Rebecca
Okay so I slept with my ex April 29th , but I got my period last weekend but it only lasted a day and it ended, but now my nipples are kinda sensitive, I look on my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> period calculator and it says my period is coming in 11 days but i don't know:/ kinda nervous, and I don't have money for a test right now.. Help!?!