Someone please help

I had my daughter 8 months ago. Hubby and I have decided to start TTC our second and last. The only problem is..I have been having seriously irregular cycles the past few months. I had a period then stopped bleeding for 6 days and now have started bleeding again for what's noe been 16 days straight. I'm so worried that I'm not going to ovulate or something is wrong. Anyone know what could be causing this?