Am I pregnant? 4 days late.

Hey ladies, so I need help trying to figure out if I should take a pregnancy test. I have had sex twice in March, and we didn’t think this would be coming since we aren’t really monitoring anything. But I have missed 4 days of my cycle, and I have been yawning everyday for that past few days, just started getting sharp back pains(randomly), vivid dreams, and I threw up once last week, and get a tad sick a couple times but nothing too extreme. Like a passing feeling... Help please.