Having Brown Discharge With Blood And Feel Cramp Pains. Pregnant?

Last month I had a clear stretchy discharge tinged with blood, I saw it when I used the restroom and I wiped. Then after that a week later I had brown discharge, then a week after that I had brown discharge and it was only once for each week I had it and it was very little. Ive been having mild cramping and I feel this cramp like pains (hard to explain the feeling) right by my belly button and then today I went and used the bathroom and I had a brown discharge on my panties but it was watery, I wiped and it was light brown discharge then wiped again and it was brown discharge with a little blood mixed in then I put a pantie liner in and it looked like dark brown discharge but when I wipe its light in color and watery. According to my app I have for my AF I shouldn't get my period until the 11th. Last month I was having sex regularly, im not sure when I ovulate. I've never had a clear (you could see through it) stretchy discharge tinged with blood before and after I wiped three times it was gone and didn't get it again. I have been having heartburn mild not as bad as it would be before I get my period. I usually only get heartburn right before my period thats how I know its coming and I usually get cramps which I am not having either. I would love to think im pregnant because I would be so happy but I don't want to get my hopes up for nothing. Please help me figure this out. I don't have the money now to see a doctor.