I n my fianc had sex but just rubbed n left cum on vigina she had periods after 5 days for 30 days went to gynac took sonography it came thick endome?

Unlikely pregnancy: To have so much bleeding for so long, pregnancy is nearly impossible. If you saw a Dr. I'm sure you had a neg. pregnancy test. Thick "endometrium" = inner layer of uterus or womb, can be caused by obesity, excess estrogen from other sources, or sometimes normal. A biopsy may be taken of the thick endometrium to make sure nothing is seriously wrong. Good luck to you!