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It could be abdominal swelling like ovarian cyst
or subserosal fibroid
. Have you had ultrasound
yet. Any cramping pain in abdomen. You need to get ultrasound also to see when you are ovulating, size of egg, quality of egg. When ovulation is seen on 14th day in ultrasound you can have unprotected sex that day and next day for best chances of pregnancy
. But before that confirm the presence or absence of ovarian cyst or fibroid otherwise tyhey can interfere in conception.