Pregnancy or period gone whack?

So late December I had a period which was normal of course

And then I had a break from work until the 2nd of Jan and I spent lots of time with my partner having unprotected sex (i know, I know 😬)

When I went back to work that's when I started feeling very sick, dazed never really tired but just abit crappy, and I was soooo hungry all the time I also had to pee ALOT but I brushed it off as work stress because I had just started my new job

I got my period on the 11th as shown before and it started off very light red but dark brown at times,

Then my second period on the 22nd, started off very dark and eventually turned very heavy, so heavy for the first time ever I leaked and soaked a huge blood stain on my bed the size of my hand

Now my 3rd period, started off with the cramps then brown clots now it's dark red with clots

Pregnancy crossed my mind but quickly went because I had been getting my period but now looking into it further, this can be signs of pregnancy in a small % of women,

I'm going to the doctors on Wednesday

But thought I might ask if any you know what's going on????

Thank you kindly.