Unfortunately everyone who posts that homeopathy has worked for them will be told it was a purely placebo effect and so it will go on.
It worked for me.
I got better really fast after my (free) consultation at... think it was the Tunbridge Wells (? something like that, v. leafy, posh and lovely compared to Barking, Essex) school, or hospital I think. I was seen by a small panel of homeopaths who were teaching the next generation of homeopaths. While the student (that had persuaded me to come along) observed. This was back in the mid 80s.
Almost immediately my mood was so much lighter. And my next period didn't knock me off my feet. Which is why I had gone. Intensely painful periods.
The fly in the ointment is .... I didn't actually take the pills 
. Cos they had odd sounding names, I wasn't quite sure what they were made of and I was scared of poisoning myself by mistake I think. Plus back then there was a rule about no coffee and no more not toothpaste when taking remedies and ... no coffee + herby toothpaste was my idea of hell.
The "magic" was the extensive consultation. My GP couldn't afford to spend 2 hours closely questioning me about life events, emotional states and health concerns (of all degrees of severity), cos .. other patients. The homeopathy teachers could. And boy did I have a huge need to be heard by that point.
Unfortunatly the effect didn't last. Had I put 2 and 2 together at the time I would had realised that what I needed to do was push for some kind of counselling. Instead I just sank back down again, having enjoyed a brief time of uplift, peace and no period pain.
Probably a good thing I didn't taken the pills. If I had I for sure would have thought they were the reason for the respite. And I would have spent an inordinate amount of time and money I could ill afforded charging between London and the Leafy place, or buying sugar pills from some alternative source.