Progesterone raises body temperature. The release of high levels of progesterone after ovulation tell us that ovulation happened, in fact.
You don’t want to take it all month long, it’ll mess with you. I would try to itch it completely, honestly, and figure out what your hormones are like without it.
You just have to not worry about you weight. Your health is more important. It’ll stabilize eventually. I know it’s easier said than done, but it’s true.