Help, please?

Im not pregnant and I don't have any diseases. I'm not going through menopause but I have frequent bladder problems. I go to the bathroom all the time and sometimes it's so unexpected. It's gotten to the piont where I'm worried when I go to sleep and when I go out that I might have an accident. I suspect it's linked to sex, which I have quite frequently. I just wanted to know it's it's normal and some helpful tips to more it stop.