Leaking or just discharge?

I’ll be 38 weeks tomorrow and since yesterday I’ve had a lot more “discharge” than normal it’s all been really watery and ever since I had sex last night I just can’t stay dry it’s not enough fluid to fill a pad or anything just constantly wet and watery. Last week at my appointment I was 2 cm and 50% effaced I know that doesn’t mean much but could this be my water leaking or probably just discharge? I have a appointment tomorrow morning so should I wait it out or call?? Also is it normal for baby to have hiccups twice within a hour? He’s already had them twice today and I’ve only been up for about a hour. TIA!!