Am I having pregnancy symptoms or am I just delusional?

My SO and I had unprotected sex on the second to last day of my period.. (Jan 8th) I know it's only been a week and 1 day since then but I've had insomnia, stayed the night at my friends house and woke up at 3am and just couldn't fall back asleep, had really bad headaches, I've been getting up late at night and going pee and I've never had that problem before, I tend to sleep later in the day than usual, I've been eating less than I normally do.. I tend to only eat once a day which isn't normal for me.. I had also taken a drink of my friends mountain dew she got from taco bell and it just didn't taste right to me but I also drink it all the time.. I don't have any breasts tenderness or back pain, but I just feel off.. Would it be too early to take a test or??