Feeling a tab off.

For the past 2 weeks I've had an off feeling. It started the 9th, the day after AF, I'm tired all the time but I have troubles falling asleep at night. I get worn out and dizzy off and on. I lose my breath doing something easy. I've had a minor headache almost everyday for these last 2 week's. I have backaches and gassy ?. Every once in a while I get a little queasy. It's like a bunch of signs that's lasted for 2 weeks. My last AF was heavy and lasted 2 days then just spotting when I wiped. Next AF isn't due till the 2nd. I have moments of Energy then it's like I crash. Monday I went for a 2 mile run and could barely do a mile. My appetite is down, I don't eat until dinner. Last night I had tears dropping but I wasn't crying or at all emotional. Could these be possible signs? IF, I say IF, the last short period didn't happen I'd be 31 dpo. What's throwing me off and making me think I'm not was the "period". What do you think??