Is 5 DPO too soon to test?

Sarah • I`m 32 years old and TTC my first child. My S/O is 39 & has a 16yr old so we are trying for one of our own. Very excited
I'm 5 DPO and threw up 3x today and my boobs are super sore. According to glow, I'm supposed to get AF on March 4. Is it too early to take this test? If so, when should I take it??