I took yasmin 21days pills and had sex on the 13th day. However, on 19th day of taking yasmin, i noticed some spotting. I was worried, so i do check for the pregnancy test on 20th day and the results was negative. And the bleeding keep going until i finished the pills. My period kept going and on 1st and 2nd day after stopping yasmin, i experienced heavy flow and pain, and when i checked, i noticed something fleshy/big clot in white colour came out. Ive never experienced this. And before this my period cycle is normal and good eventho on taking Yasmin. Fast forward, my period was late for 4 days already on the next cycle which is right now. But ive already checked for the pregnancy test today, and it is negative. Do you think the big clot is possibly a fibroid passage or polyp or anything? Should i do the ultrasound?