What Causes Severe Sweating At Night?

Hello, I had my son 2.5 years ago and I had many complications with him. I ended up being on progesterone and had a few medications to stop pre term labor. After child birth I ended up having depression come back. I also started night sweats and they have still not gone away. I had been having a regular period over the last year but in December, my period lasted 1 month and then stopped for about a week and a half and I started spotting again. The worst is probably the night sweats as my clothes are wet so then I am cold and hot, etc. I have had ultrasounds and bloodwork and everything shows as normal. What could be going on? My hormones are normal.