Confused

Hi! So I am currently TTC. Last night I took a first response early response test 8 DPO. I know it’s soon but is that too soon for an early detection test. This is my first time TTC.... anyways, I got a negative. I am nautious when I eat, my boobs hurt and are sore and I’m cramping after I pee. Also , TMI but I unfortunately I always get a yeast infection at least 9 days before my period. This started happening last February. This is the first month since then that I have no yeast. I started taking this vitamin from a company called “love wellness” called the “perfect conditioning vitamin” maybe some know? Well it’s suppose to kill yeast at a cellular level. It’s just a vitamin though ! I dont know maybe I’m over analyzing but I’m wondering why I didn’t get an infection and why I feel this symptoms. Also have been tired and feeling like sharp pulls in my stomach, my skin is also extra oily. Do you think it’s just strange PMS symptoms as I’ve just turned 29 and maybe my body is changing... or did I test tooo early and need to relax and just re rest ?!?! Any help

Or opinions would be great as this is my first time going through this !