Pain and smell after urinating??!!!

For a few days now I've been having pain after urinating and a smell that smells disgusting! I can't even describe the smell but it's so bad that it makes me feel sick. This morning when I woke up was the worst! My vagina hurts so bad since I peed a little over 20 minutes ago. I've had a cold the past 4 days so I'm not sure if that'll impact it. But I don't know why it hurts so bad. I hadn't had sec with my boyfriend for at least a week because we were both sick and we had sex yesterday. There was no pain during sex and I always pee after sex but yesterday I fell asleep and forgot. What could be the cause of the smell and pain?!