I think I might be pregnant

I had sex this past Friday and the Friday before that. This past Friday when I put the condom on I put it on backwards so all I was flip it over and roll it on....but ever since I had sex with last week I've just had this gut feeling that I'm pregnant.my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> told me I was very fertile and last month I was on antibiotics so
I know my birth control pills would have failed me. Everyday in the middle of the day I get light cramps like my period but they only last maybe a half hour. No bleeding or anything. I know it's way too soon to take a pregnancy test. I've just this feeling...