Hello from a long-time lurker! And now here for some advice...
TTC for the first time, came off the pill in March. Cycle is normally between 26-29 days long. Am currently 16DPO and period was due to start next week. Spent all of last week convinced I was pregnant - chest really tender and sore, felt sick and bloated. But then period began totally unexpectedly yesterday (and tenderness has stopped) - meaning I've had my shortest cycle yet! (23 days)
I was wondering if anyone could advise - does this just sound like a normal cycle and am I reading into things too much? (It's the 23 days that's throwing me. But could the heat have effected that?!) Or could it be a chemical pregnancy. I'm so confused and have been trying to use Google to work out differences between period/implantation bleeding/chemical pregnancy 
Have been using Flo to track periods/ovulation/etc for five/six months now so maybe am being too reliant on the 'accuracy' of that and am just reading into everything way too much! And perhaps need to look into other methods.
Thanks in advance for any advice 