Spotting - my personal definition of spotting vs. bleeding (used for my pregnant clients), is that spotting doesn't hit the underwear, it's just a toilet paper thing.
That said, a few hours of spotting at ovulation is normal.
Spotting on birth control = also normal.
Having a few days of panty liner use or spotting at the end of a period = normal.
Not normal is spotting for days before a period. It's a sign that the luteal cyst is just not supporting the endometrium (the uterine lining) well. That may point to inadequate egg production or maturation, or an inadequate response to progesterone that is being produced. When this is an issue, you've got several issues with conception. If the egg isn't matured properly, it won't pop out well, and may not be present for fertilization. Also, it may not have the right coating on it to allow sperm to penetrate. Potentially, it might not have the chromosomes it needs if it didn't divvy nice. When it reaches the uterus, the uterus lining might be days behind where it is supposed to be, not making a thick fluffy lining. Then, it may start to shed early, disrupting the embryo implanting.
That said, most women with an issue have ONE of those problems, not all of them. But, if egg quality is the issue, all the progesterone taken after Ovulation isn't going to help. If the issue is just premature shed of the lining, then progesterone is the magic ticket to delay menstruation until implantation occurs.
It's normal to have a funky cycle once in a while. Or, to have more funky cycles as you get older.
You can also just pop a capiliary in the cervix with sex or a bowel movement, and look like you're spotting from the uterus, when it's merely harmless cervical spotting.
I do have a bias towards doing things to maintain general health, but also to just get off the porch and get the $40 worth of clomid or the $50 of Femara and quit with the acupuncture and the chi balancing, and the flower essences, etc. Or get the metformin or the thyroid medication that's required and go from there. Some of my bias is financial. Some is personal - it has worked for me to take medications not herbs or vitamins. Some is professional - as a midwife, I see what gets my clients pregnant. It's not acupuncture. It's clomid. If you want to hear bias, ask me about birth control! I never see IUD failures, but everything else, I do not trust! I can't be unbiased, so the best I can do is present my biases for review.