Potential Pregnancy Advice/Early Pregnancy Signs? (Advise/opinions please!)

Br
Hello ladies! đź’ś First of all, I will literally take any opinions and advice...I want to hear them all so I know what to think! To preface this, you should know the first paragraph will potentially be TMI. Anyway, I'm extremely regular and if my period is ever late it's usually due to stress, and it's usually only by a day or two. My period is now late by going on four days, so I know this is a premature assumption, but I know my body and I'm not cramping like I normally do, and there really isn't a sign of a period at all other than some headaches (I've also recently been giving up caffeine little by little and replacing with water) and acne popping up. I've been stressed from work but I just don't feel the onset of my normal period indicators.
With that being said, I know some of the signs of early pregnancy are still acne, headaches, dizziness, among many other things. My SO and I would be overjoyed if it did happen, but with us moving in together this weekend, I also don't want to take a pregnancy test prematurely. Can I have some tips to knowing if I should take a test (maybe there are other signs of pregnancy early on that aren't noted because most women don't realize immediately) or when I should definitely take the test? I know standard tests can detect a week after a missed period. However, this being said, our first time and last time unprotected was the night we eloped which was the first. Shit happens though and honestly, I will probably be one of those girls who goes full term and never gets morning sickness, continues with periods, etc because my body likes to say fuck you lol.
Anyway, any advice or tips would be lovely! ♥️💜 I probably sound like a bumbling idiot because of all the assumptions but it's just who I am! I plan for best and worst case scenarios and everything in between. :) I just want to see if anyone has anything to add and if anyone thinks I shouldn't treat my body like it is pregnant (i.e. little to no caffeine, plenty of rest, looser clothing, etc.)
Thanks ladies! Stay beautiful. đź’ś