trying to get pregnant #TTC

I currently have a 5 year old little princess!! My husband and I have been trying to conceive for about 6 months. I have been told that I might have PCOS because my periods are usually all out of wack!! i got pregnant with my daughter in a month! I'm just starting to feel like it may not ever happen and its making me feel less than.. we really want to have another child.. Any lady's have any tips ! Even though I've probably tried it all! Thanks in advance