Hi. First time poster so please bear with me whilst I get used to things!
I'm early 30s and TTC#1 C5. My last three periods have been very light, to the point of almost non existence and mainly old brown blood . I usually have the complete opposite end of the spectrum (very heavy bright red with lots of clots, sorry if TMI
).
Has anyone else experienced this? It's the marked difference that's making me worried something is going on. Could it be early menopause? 
Grateful for any help!