Emotional Ups and Downs

Been going strong for 19 days now by myself. Just found NF tonight. I'm really excited to find all of these resources that I didn't know existed previously. I have a question though. Since I quit my emotions have been all over the place. At first I had "the Surge" and felt really good, then everything flatlined. I barely felt any ups and downs over the first week and a half. However as a stared approaching week two maybe around day 10 or 11 my emotions started dipping. Now I feel more negative than positive emotions but the negative isn't as bad as it was before I stared my journey so I can put up with it, however it lasts a lot longer and has been going on for about 9 days now with little break. Wondering if this is normal and has to do with dopamine and other chemicals and hormones? Not really sure, any personal experience or knowledge on the matter would be appreciated Thanks.