Throwing the towel in!!

So, I'm 28 and TTC my 1st with my husband. I got off BC in August and since then I had a chemical pregnancy and nothing after that. I was hoping that this go around would be it seeing how I was almost 5 days late for AF. Well I started spotting last night 12/4 and since then been bleeding, but it's not like my others it's light bleeding, with what looks like clots. I just don't know what to do or even think. I'm always thinking something is wrong with ME because I can't concieve so I've made the decision to be seen by a fertility Dr. to rule things out. I just hope one day I'll get my BFP!!