Spotting but no period for 2 months not pregnant

[cheekycherryza]

Hi all,

I've been on the pill for about 6 months now. My periods have always been like clockwork in duration etc so I'm confused because last month I spotted some brownish stuff but nothing that actually showed up much on a sanitary towel and there was no bleeding. The same thing this month. I've had pms symptoms like sore boobs and moodiness but no actual period. I'm not pregnant as have done pregnancy tests just to check not that I've had sex since July so can't be!

I'm not sure if I should go see the doctor only for the quack to say, 'mmm, well it could be stress.' I've never had period disturbances due to stress. Not when I got married, after shock of death of family members or whatever. If anything, when I've had a stressful time in the past my periods have been heavier. But not had any MAJOR stress lately, so can't figure out why this is happening.

Anyone have similar?

Thanks