Light bleeding

So I been suffering from this headache from hell from 8pm-1(current time) n went to use the washroom and noticed alittle bleeding. No clots just like when you have a nose bleed just alittle red.. ugh should I rush to the ER again or just wait it out. Currently 18weeis 6days I have my gender ultrasound tomorrow (Wednesday)

This is what it looks like when I pee