What do u think? could i be pregnant?

my last period was on april 30. i usually have 35 day cycles, so when my period was late i was so excited because i thought i was pregnant so i took several hpts and got all neg. i had alot of clear discharge, once i actually thought af came because i was just sitting there i felt really wet all of a sudden so i rushed to the bathroom and it was just clear discharge. i also had tender breasts and dull aches in my ovaries. so just for the heck of it i took a opk when i was about 5 days late and it was positive!! so i thought i was pregnant because i read u can get a positive opk when you are pregnant. so i took another hpt and it was neg. so from what ive read i think i ovulated late and i was actually ovulating around the time af was suppose to show. well it's been 10 or 11 days since i took the opk and i have sore breasts, mild on and off cramping in my lower tummy and little poking in my right ovary sometimes left and a dull lower backache i feel bloated like i am full all the time and get light headaches i have a stuffy nose i still have watery discharge and i am more tired lately. so if i did ovulate it would be like 10dpo now i took a cpl tests a cpl days ago, ept digital, clearblue easy and answer and they were all neg was it too soon to test? could i be pregnant or is af playing games? has anyone else had these symptoms and found out the were pregnant ?? is it possible to ovulate on cd 40? please some advice would be great!!!! what dpo did u get your bfp??