hi hoonie
I experience the same thing as you in feb. Missed my menses, test on clearblue 3 times but all negative, went to see my gynae, she gave me pills to induce my menses also fail, did 3 blood test, result all negative. I was very worried & stressed for 2 weeks. I went to seek 2nd opinion, my gynae say lining around my womb is very thick (same ans as wat I got from my 1st gynae), did a blood test to check my hormones level, all very good, eventually it came by itself. same as you, I got all the symptons
My menses used to be quite irregular, my cycle can be as long as 40 days, now seems to be pretty regular, hopefully can get preggy soon