Hi. I ve gone through your query and I can understand your anxiety. Thick endometrium often results from increased levels of estrogen and less progesterone. Such thickness is noted in the early pregnancy or also in ectopic pregnancy. Also the symptoms you experience are all early signs of pregnancy. So, I advice you wait for 10 more days & to do serum beta HCG test to get accurate results. Hope I have answered your query. Let me know if I can assist you further. Take care. Regards, Dr. Yogapriya V, General and family physician.