I have 3 kidsAfter my third child I had the

Patient: I have 3 kids.After my third child I had the copper IUD for about 18 months and then had it remove to conceive another baby. After I removed it I had 2 normal periods but the third was supposes to come April 26 and it didn’t.Then on the 29th I had spotting (just one drop of light pink blood) so did the 30th ,the 1rst,the second (I had sexual intercurse on the second) and the third also just one light pink drop.Today Monday the 4th I have spotting of red/brown blood with some small clogs.Also been having lower abdominal light pain since the 25th one day before my due date until today.between the 1,2 and 3 I also was feeling my uterus streching, just how I felt with my 2 last pregnancies. Also been having bad mood, I been eating a lot, my breast are a Lil bigger but not sore at all ,constipated and can also hear my stomach even when I eat.I took a pregnancy test and it came out negative so, I’m wondering what could this be that Is the first time it happen to me ,please help .what all this symptoms point to?

Doctor: