I am not OP but I would get the head ache checked out.
Bleeding for me was exactly as your described and for me it lasted 10 days... I just stopped yesterday. There were moments I felt weak and dizzy. I hung washing out on the line on Saturday and nearly passed out. Make sure you eat iron rich foods.
The other thing that I found distressing was that I still had morning sickness, last Friday night, I went out to celebrate a friend's birthday and I was so nauseous just like I was the previous week when I thought everything was okay. I was still passing clots on Friday, although the heaviest ones were the previous Sunday.
The "pregnancy symptoms" stopped for me on Monday. Thank god, because I didnt want to explain to people what's wrong.