Why did my period stop? :/

Y’all, I don’t know what’s going on.

On Thursday, I had light brown discharge all day, until that night where I had some bleeding. I was due for my period two days after that, so I figured my period came early.

On Friday, I had a moderate flow, nothing too light but nothing too heavy either. Bright red color. Passed a lot of clots. Yesterday, same thing - moderate flow, lots of clots, but towards the end of the night, my flow lightened significantly after taking an Advil. I also took Allegra for my allergies.

This morning, I had some wine-colored bleeding, but as of the last time I went to the bathroom, I wiped and found light brown blood on my toilet paper. Usually, this signals that your period is over.

This is super concerning. My period in January lasted 6 days. My period in February lasted 7 days. I like to take pregnancy tests for safe measure, and they were all negative.

I had your typical PMS symptoms the week before - cramps, acne, mood swings, so the chances of this being a pregnancy are quite low. I had protected sex on the 14th (outside of my fertile window) with my boyfriend, but neither of us finished, we chose to stop because neither of us were feeling pleasure. The condom was also in-tact with no holes.

I’m just super concerned because I don’t usually have periods this short. Thoughts? :/