WHAT IS GOING ON!!!

I'm 29 years old and I'm ttc. I have a 5 yr old daughter going on 6 in September. I started the PATCH birth control in 2013 and have been on it ever since. I stopped taking the patch in February,my periods have been so off since. My cycle started March 27th,the next one April 27th,no cycle for May and my next and last cycle was June 5th. I haven't had cycle since then and now I'm just spotting,very very light spotting. Never any spots on my panties,just when I wipe and after wiping a few times it's gone. I guess my question is has anyone else experienced this before? How long does it take for my periods to come back? I don't want to take a pregnancy test,it just makes me mad when it comes back negative. Please Help!!!