Too early?

So me and my boyfriend had sex on New Year’s <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> without any protection and I can’t take birth control because it caused me to have a stroke this past year. Wellll he said he didn’t pull out and I checked and it was my highest ovulation day. I’m suppose to start my period in the next few days, and I took a test today but it was negative. Do you think it was to early to take a test and that I should wait a few weeks or what?