For the past few days I've been suffering from pain in the lower left back when pressure is applied. There is also a noticeable lump/swelling. This makes it almost impossible to sleep on my back. Other things that may be relevant: I suffer from anaemia so I'm on iron tablets; I'm on the pill; I am also on 40mg of fluoxetine daily; in the past few days I've been suffering from nausea, dizzyness, hot and cold flushes, constipation, dioreaha. I also fainted for the first time in my life yesterday. Another thing I've noticed is that dispite being on the pill, I've been on my "period" for 2-3 weeks (I am quite irregular which Is why I went on the pill in the first place) I went to see the doc today but he couldn't find the lump/swelling so just sent me on my way.