I've been pretty busy today.
I've been feeling all sorts of weird things over the past two weeks - bloating, breasts feeling bigger and sensitive, tiredness, insomnia, body temperature rising, taste of metal etc etc - that I decided to take a test 3 days before my period was due.
First test - Sainsbury's POSITIVE
Second test - Waitrose NEGATIVE
Third test - CB digital early - NOT PREGNANT
I'm pretty sure two negs and one positive means as it says on the tin - NOT PREGNANT but would like to know if others feel contrary?
I will take another test first thing in the morning as all tests were taken within an hour of each other today - which makes me think it a chemical pregnancy can be ruled out because of the time frame.
My thoughts are this is a negative result this time but I keep reading that it's hard to produce a false positive which is sending my mind wandering... 
Also to note me and my partner have not really been actively trying to conceive with ovulating devices etc but we've decided not to be careful either.
We decided around 13 weeks ago to stop being cautious although I have been off of the pill for nearly 6months.
The last two months I've experienced really heavy bleeds that have lasted just 3 days. (Whereas usually I'll have a moderate flow that lasts 5-7day). This is something I have found odd as it also began around the same time we agreed to not be careful anymore - thoughts on this would also be welcomed?