Should I test?

I’m just confused I missed my period in September than started on the 2nd of October well what I thought was my period I was bleeding and missed it completely in September. My boobs were aching, I’m constantly hungry, my bleeding is very light not even enough to fill a light tampon so idk what’s going on. I’m planning on buying a few tests today to get it out of the way, if I’m not pregnant than I don’t know what’s going with my body 🤷🏼‍♀️