Thanks everyone. I looked on the internet last night and apparently peppermint oil isn't recommended even when breastfeed.

I have been having these headaches due to the weight of Cooper and probably the way I hold him etc. I felt wonderful when I started going to the chiropractor, but the last 3 visits, within 5 days, I am back to getting the same pain, and try to cope with it at least til 2 to 3 weeks, because it is getting expensive!

Thanks Kelly, I will look into Myotherapy. So far I have also tried nerve therapy (no luck) and may also look at an osteopath.