HELP!!!!!!!

I'm 1 week delay. Nung isang araw biglang sumakit ng sobra puson ko. Kaya naglagay na ako napakin kasi nasa isip ko dadatnan na ako. Pero kinaumagahan, parang iba yung buo nung nasa napkin. It looks like a miscarriage tissue. Idk if im pregnant kasi i haven't take pregnancy test (active kami ng husband ko). What do you think? Im worried.