Redness on my belly

mustafa
I'm pregnant at 30 weeks 5 days. For the last two days, I've been noticing red horizontal line just below my breasts. It is not itchy or anything. In fact, if I don't look at it, I forget it's even there. I don't think it's a rash. It was there last night and when I woke up in the morning it was almost gone. However, by the time I was going to sleep again, it was there again!!! I think it's something stretching or something from the inside. Is it normal? Does anyone know about this?! I'm so worried.