HELPPPP MEE! Period!?

Ok so i think, i dont remember to well, but i got my period 090109' and i tink i ended 090409' but not too suree, and yesterday i had a lil blood on my underwear i thought it was nothing. But today i went to the restroom and i had alot of dried blood on there, todays the 22nd. Can you have your period 2wice a month? Wats wrong with me?!?! idk if i can be pregnant and my period is acting up?