For three to four days now i have been experiencing severe lower back pain (tailbone) i put it down to pulled muscle pinched nerve but then three days ago started having light pink/brown spotting...it is only really apparent upon wiping. Ive had a little abdominal pain but nothing to bad and today have been experiencing feelings of nausea and a dull headache but have not been sick. My partner and i have been trying for a 2nd child for sometime now and have only been intimate twice since last cycle. I would have roughly been due to start a period when the spotting began.
Hi welcome to Chat Doctor forum.  Thanks for asking a question to Chat Doctor. Forum.  You had severe backache, followed by very slight spotting. Then you had abdominal pain, nausea, and headache. You are bring for a second baby, and have only twice been intimate from last cycle. The spotting day is my estimated date of the period.  It appears that the back pain may be due to ovulation, or urinary tract infection, or stone in the bladder. Spotting also could be due to ovulation.  I advise you to consult a gynecologist for diagnosis and treatment.  For conception, you need to have sex as frequently as possible. Ideal period is had sex from 11th day to 20th day of the period. (daily) try to abscond from 1 to 10 of the period.  Wishing for a quick and favorable recovery.  Best regards.