Just left the hospital

35 weeks plus 2 days. I have my cervix stitched & been loosing mucus plug for 3 days now, today it looked pink/bloody. I went in today and they said i have thrush (as I've been itchy) they prescribed me a tablet to insert before bed. But i am worried because the insides of my vagina really hurts & they said it could be the thrush, ive had thrush before and never experienced this kind of pain only experienced itching. Im so confused as to why my vagina is really hurting inside?? Even when i walk it kills me. Plus i have a urine infection