I had unprotected sex on December 9th, but he pulled out, I have clear stretchy and discharge

You should take a hpt, because it sounds like you could be pregnant. Here is my story. I am 25 and I have a 9 year old daughter. My husband and I have been together for about 8 years, We have tried on and off to get pregnant. I have been off BC for about 3 years now. 18 months ago I had pregnancy symptoms; sore breasts, very moody, ect. I took a hpt and it was negative. Then I got my period and it was very light, (which I am not used to ) but I figured it was my period. Then about one month later I ended up in the ER in extreme pain, and thinking that maybe i was just really constipated(tmi sorry) The dr tells me that I am pregnant. But they could not find the baby on an internal ultrasound. So they ruled my pregnancy an ectopic pregnancy.The pain went away a few hours after being in the hospital.( Without any meds). They kept me for 4 days to measure the amount of HCG in my blood and after 4 days they said that it had dropped enough to rule my pregnancy abnormal. And they told me I had to take methotrexate injection to terminate my pregnancy otherwise I would end up having surgery and possibly lose my Fallopian tube. So scared because first of all I didnt know I was pregnant and second of all because I didnt want to lose a tube I agreed. Well They said I wouldnt pass any tissue, because the injection would evaporate it. Well I did pass tissue and so now I think I was misdiagnosed, and maybe ended a good pregnancy. SO since then I have been very in tune with my body. I know when I ovulate and I know when my periods come. Usually 29-35 days. Also my husband has been on fertility herbs for about 5 months now, which he was taking back then as well. I felt myself ovulate 12/9/14, and AF was supposed to come 12/24. Well It never showed. I took a hpt the day after my missed period and it was BFN, and one again about every other day and all BFN. I didnt really have any PMS symptoms prior to my expected period.But since AF has been late, I have had slight nausea, sore breasts, insomnia, moodiness, and HA's. I went in 1/6/15 when I was 12 days late for a blood test and it was BFN. Now 17 days late and I have what looks and feels like a very light period!???? What is going on with me?????? help please .. any body..