I need help

*updates pls read the whole thing *

I took a pregnancy test today that had been sitting in my homegirls hot car for about 2 months now and it was a clear negative. However I also started spotting and I’m still throwing up. 3 days until my period could it be too early? Could the test have been messed up due to the heat? I had a baby 4 years ago but did not track my pregnancy wasn’t trying to get pregnant and I was 16 with no clue of anything so I guess you could say I’m fairly new to this. Please help.

I had sex the 28th-31st which were my most fertile days. 2 weeks ago I started feeling fatigued started peeing frequently and since I’ve been constipated on and off extreme cravings nausea vomiting when I smoke a cigarette or drink alcohol (which is very not normal) my heartburn is off the chain I’m cramping slightly in my lower abdomen and when I’m pmsing I normally cramp in my back and have diarrhea. My cm is also different. It’s sticky and a lot heavier but no smell. My period is due on the 24th and I really want to take an early pregnancy test but I’m worried I’m just imagining this like I did last time I tried to conceive 😔 what should I do? Do these sound like early symptoms?