what's wrong with me??!

So last month, September 30, I was supposed to get my period. I had a spare PT at the time and used it the day before AF was supposed to show but come to see it said I was pregnant!!

5 days later after no period, I started spotting just barely on October 2nd. Then the next day woke up in extreme pain it was horrible I was bleeding very heavily and dark. I got upset and wasn't sure if it was a miscarriage or bad PT or what. but for that whole 7 or 8 days I was in immense pain. my period usually lasts only 5 days light. it was heavy for a week straight with gut wrenching pain half the time. after my period or whatever that was had ended, I started feeling nauseous, extra hungry, tired, all kinds of pregnancy symptoms. I finally made an appt but it's not for 2 weeks.. and took another PT but bought cheap ones rather than spending more on expensive tests like always.. it came out invalid, pretty sure I took the test wrong, it came with a dropper which I didn't use right and must not have got enough urine in the sample box. I just don't know what's wrong with me. oh also super bloated feeling which is extremely weird for me after being off my period??