Need advice 😤

So I am TTC ; these passed two weeks have been a rollercoaster of how I've been feeling. Last week & the week before my stomach was insanely hard & bloated ; I barely had an appetite (which is very out of the ordinary for me) very tired ; but sometimes I had insomnia , headaches lingered , discharge increased a lot but then stopped ; I've been passing a lot of gas , my pee is very murky and imvedy pooping a lot lol. cramping has been on & off for about two weeks , I vomited about twice in those two weeks but that was it then I started feeling normal , my stomach wasn't bloated anymore etc. here's the weird part now idk if my thermometer is broken, but i heard basal temp is a very big thing in pregnancy so I've been monitoring it the passed two weeks it has been VERY low. It was 94.4 for two weeks and now after waking up this morning it is 93.1. I'm now 4 days late on my period, i was feeling fine the passed two days figuring I jusr wasn't lucky again this month and I'm waiting for my period to patiently come, however how I've been feeling since I woke up is starting to freak me out. I woke up this morning very congested, I had a horrible taste in my mouth which is normal obviously I just woke up so I brushed my teeth; I STILL had this funny taste in my mouth and this funny sense of smell in my nasal passages? I felt very very sick waking up , nausea but I couldn't throw up ; so I figured I'd make something to eat and drink some coffee so I made a cup of coffee and bacon & couldn't even eat it. Then I started getting this horrible headache and pain in the bridge of my nose and the front of my head . My sinuses are going crazy and they hurt so bad right now; so I figured maybe I have a sinus infection but I have no symptoms of it? I had more symptoms of pregnancy in the last two weeks than I have of symptoms of a sinus infection. Yet I've taken 4 pregnancy tests in a span of two weeks and they're all negative!! So can someone help me ? Anyone know anything of what could be going on? Am I just sick , am i in the stages of early pregnancy? What could be wrong because I'm starting to get worried.