Need your advice

Hi guys, am very new to this but since ttc i have become am internet junkie.
quick Q, we have been ttc for 9months, this cycle i had cramps but no bleeding 16DPO which is the day due to get AF so didn't really take notice. Cramps were strong for 2 days and bb really sore and nipples huge. Also have loads of CM. Got a faint bfp with pregnosis (which i now know are reputable for false +ve) on 18DPO. Had blood test same day with -ve result.
Was very upset as the symptoms this month are extremely different from others and was convinced i was pregnant.
I am now 21DPO and 6 days late for AF, basal temp still high, lower belly light cramps, headaches, sore bb and loads of CM.
Had BFN on HPT with FMU today.
I am going back for BT on monday again.
Has anyone else had this happen before. Could I be pregnant and HCG levels not high enough yet to register or am is it in my head?

There was one girl here about 4 weeks ago, who finally got here BFP at 12 weeks, prior to that she kept getting BPN.

thanks Charlotte
Sometimes you go crazy during the tww, this is my 3ww! seeing Dr in the morning so will know on Tuesday.

Good luck with the test today - hope its a BFP for you!!!!! :)

thanks guys, went to Dr today, doesnt want to do another blood test, did -tve urine at surgery and he thought that was good enough as i am 23DPO. He thinks maybe i didnt o this month even though i swear i did and if AF doesnt show up in a week try another HPT. :rolleyes: