Maybe pregnant?

So I thought I started my period about three days ago, but it’s not like how it normally is, usually it’s heavy and I have to change a tampon almost every hour before I leak, now I take it out and there is barley any blood.

There was also brown discharge today as well, and now I just threw up after feeling fine all day...

These are signs of possible pregnancy right?

I can’t go out to buy a test right now considering it’s 10pm but my fiancé is going to grab one on his way home from work at 4pm....which seem forever lol I just wanna know