It has been written about here a million times (learn to use the topic search๐๐ป) and everything has been written about on the Internet for a long time. Your hormones return to the pre-pregnancy level, so you lose everything that did not fall out during pregnancy. During pregnancy, the body works differently, so often the hair becomes better and thicker. But after pregnancy, everything returns and you have the same level of hair as before. This is a normal and natural process!