Developing feelings for a friend is one of the worst things

.. But I can’t tell if I’m really developing feelings or if my hormones are just out of wack, pfft. To elaborate, my period cycle has changed a lot recently, so I don’t know if the hormones have as well (it certainly feels like it), so then it’s possible that this is just a phase. I can’t really tell though, which sucks, and it’s made worse because I don’t want to have feelings for them. I don’t want to ruin the friendship because it means too much to me.