I need help...

Johanna
Girls, ive been wanting and trying to get pregnant with my husband for over a year now. I have used this app for awhile to see when I ovulate, since my cycles are never the same. Now this month I was supposed to get my period on the 29th but ended up getting it on the 22nd. Today is the 28th and im still bleeding, and for the last two days I have been experiencing really bad nausea and dizziness along with alot of cramping. Usually I get bad cramps right before my period and then for the first like 2 days. So these other symptoms for me excited thinking maybe I am pregnant. But today my bleeding is darker red with little clots. Sorry if this is Tmi... Im really confused and worried. Can I be pregnant and having a miscarriage? Has anyone ever had a similar experience? Please let me know....