my period was on sept 2-7th. had intercourse several times on the 13th protected and unprotected with pull out method. i ovulated on the 16th. now i feel light cramping on and off for the past 3 days (its the 19th today), bloating more than usual, constipated, nausea only at night, nipples sensitive,heavy breast feeling, weird twinging in my uterus, body aches especially lower back and lower abdominal and legs, urinating a lil more than usual especially at night, discharge alot on 18th with was egg white color, other days just a lil, dizzy spells few times a day. could i possibly be pregnant? when should i take a pg test?