What causes thigh and lower abdomen pain at early pregnancy?

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I hope you did not have any extraordinary activities to cause the pain around the thighs and lower abdomen. The pain we are to worry about is intermittent pains, that come for a few seconds, just like the pain in periods and then disappears, and come back again later. This may be associated with discharge from the vagina, with or without bleeding or spotting. If anything of this sort, do meet your doctor immediately and you may need medications to make the uterus quite. It could also be an infection in urinary bladder with a burning sensation while urinating, increased frequency of urination, and feverish feel. This also needs a consultation with the doctor to confirm the infection and using antibiotics. Untreated urinary infections can further lead to pain in the uterus,

It could also finally be an infection around the uterus if you had intercourse recently. This also can be cleared with antibiotics. Anyway, nothing to much worry about, as you do not have any bleeding or spotting. Simple course of antibiotic, in case of any infection and hormonal support can relieve you of the pain and more important can make your baby safe. Drink a lot of water, avoid intercourse, any sort of mental, physical stress, and rest well. Kindly do not delay to visit your doctor.