Pregnancy discharge

The other day when I wiped I had a brown discharge that was gel like. Almost like old blood. I haven't had it since until today. I've also had some normal clear discharge as well or so I assume is normal? But ever since my mom told me she would leak amniotic fluid I've always had that thought in the back of my mind and now with this discharge I'm starting to get really concerned. I don't know if I should call my doctor and make an appointment or if it's normal? I'm 25 weeks. And had an ultrasound any out 2 weeks ago and they said everything looked fine then.