Is it normal to watch porn and masturbate all day

By the way I'm female aged 29. It hasn't always been this way but for the last 1/2 months all I do every spare min I get is watch porn and play with myself I get so wet and ohh I'm getting wet just writing this and I squirt like f##k I've never come like it before. It's getting that I'm doing it sometimes up to 4 X a day and I get really sore from doing it so much but I can't help it. I've never had s high sex drive but now it's off scale. I fantasise about sex all the time Any1 got advice? Is there such a thing as sex addicts? What can I do it's affecting my life. I've even had a wank in McDonald's disabled toilet. Fuck it I Gotta have a go now just talking about it I'm playing with myself. Please someone HELP