Why am I experiencing vaginal discharge and abdominal pain?

I have a boyfriend we are in physical relationship from the past 1 year we used to met mostly once in a month and sometimes twice. Usually we used protections but one time we had a minor V sex without protection. Till yet we haven't a proper intercourse. My vagina is still Virgin. We had anal sex with protection. It's being around 5 month when we met last time. Last month I got vaginal discharge which is thick and white. It irritates me a lot and itching btw clitoris and urethra. And I got my periods few days before my menstrual cycle and I also got minor spotting once 4 days before periods. I don't what should I do ???? I'm scared. I also have abdominal pain whenever I eat something. Most of ye time my lower abdomen is paining. Plzzz guide me I'm so much confused ????????????????????