Bleeding every2weeks lasting 2 weeks...explanations?

[MandaBoo86]

I am 21 years old in a steady relationship for 5 years now. I have been off birth control for a little over a year now and the past couple months have been crazy.  I got my period on the 25th of may and it was a normal period...my menses usually come in cycles of 25-29 days and last about 4-5 days.  2 weeks later on june 9 I started spotting and this went on for about a week and started getting a bit of a heavier flow that lasted for another week.  so i was bleeding for over 2 weeks. two weeks after that bleeding stopped i started bleeding(july 8th)...AGAIN!!  but this time it was lightfor about 4 days and then a little heavier(not by much) for the next week...on july 18th i was still spoting but it very light pink or brown only when i wipe...it was mixed with kind of a snottlike discharge but for the last couple hours it's been watery discharge mixed with brown and pink.  I really dont know wuts going on here...but i would like to.my breasts are sore, im EXTREMELY emotional and very depressed with some anxiety.  I also am having slight cramps...they are not actually too bad...they kinda feel like mild menstral cramps.  i know this could be a numerous amount of things but could it possibly be pregnancy?  We have been ttc for the past year or so w/ MC last august, nothin since.i am constipated with occasional diarrhea...which is weird...i also will get extremely hot and 10 minutes later i feel like an ice cube!  my dr apt isnt until next week and id like to have an idea of what i can expect. can it be uterine infection? i dont have history of STDs or n e thing...my paps usually come out normal.the discharge isnt really foul smellin either...and i dont have terrible cramps or a tempurature....I did happen to pee one day and it kind of had a strong sickening smell to it! but after that one time it never happened again...i can go on and on and on about how i've been feeling lately...what can i expect when i go to the doctor?