I recently removed my mirena on October 23rd and recieved my period on October 25th( very heavy for 4 days) my periods are normally light and on time every month. I've had intercourse every other day ever since the removal. I was supposed to get my period on November 22 and never received it. I took a blood pregnancy test and had a hcg of 1.40. They told me negative, but I feel pregnant: nausea , abdominal pain, cramps, tired/sleepiness, could this mean that I'm pregnant or that my mirena is playing tricks on my body?