Any ideas?

Had my normal period from the 10th thru 16th. Did some baby dances the following 2 days after that. Then again on the monday and Tuesday after. A week later on Wednesday and Thursday i started spotting. Then it stopped. Took a pregnancy test then but it was negative. Been contstipated breasts swollen and moody as all hell. Didnt think my period is supposed to start till next week. Im confused...

Anyone any ideas as to what is going on? Been ttc since sept of 18...had a lot of BFN and really trying hard not to get up my hopes...