Misscarriage

I wanted some advice - last month i did a test as i noticed i was eating more craving snacks and sleeping alot more period was one week late so i dis a test a digital one said not pregnant a tesco one had a faint pink line so we tnought thats great about two days later i started bleeding i thought maybe implantation bleeding but then it got heavier i thought oh maybe its my period and test is wrong i had te worst cramps ive ever felt i was told by a pregnant friend she thinks i was having a misscarriage bleeding stopped after two days, does this muck up your periods? My <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> on here says im due on thursday but my ither one says in ten days normally im due on now because my mum comes on just a day or two after me, could i be pregannt again?