Confused... Odd period? Pregnant?

I usually have a 5-6 day period. This month, my period was a day late.

I started spotting on Thursday.

Friday morning it became a full-blown, heavy period with some clotting.

Saturday was a medium flow with more clots.

Sunday I was spotting and now there’s nothing when I wipe. My period was supposed to end by Tuesday so having it end on Sunday is a bit odd.

I’ve been having headaches, uterine pressure, waves of nausea, super moody/emotional and extreme tiredness. My breasts have also been a bit more full (not sore though), even hubby asked if I was pregnant because of them growing! I don’t usually feel like this while on my period. I even threw up in my mouth earlier today! 😖And my breasts will usually “deflate” the day before my period starts.

I’m very confused. Could I actually be pregnant after bleeding like this? Will be testing tomorrow to make sure, but any advice is welcome for the time being.

Thanks!