LH/FSH Ratio

Does anybody understand this? My doctor ordered bloodwork but she is out of town this week so I can't talk to her until our appointment on Tuesday. I'm having very frequent periods (about every 12-13 days) and spotting in between periods. My results are:
LH: 9.1
FSH: 3.9
I looked it up and I think my FSH is low but I don't know how to calculate the ratio. Can you help? Thanks in advance!