TTC with a irregular cycle

My husband and I have been TTC and  prior to this I was on the Depo shot for a round 5 years and had maybe 3 cycles during that time. My last shot was July 2016 and we chose to start trying in October so i didn't receive my shot that month. I spotted for a few days in October and then had a regular length cycle in December. Nothing until February, during this time I experienced nausea, food adversions, breast tenderness and I tested multiple times and they were all negative. I had regular length cycles in February, March, April, and May. And I started my June cycle, end of May into the beginning of June, and since then I have bled for a week, nothing for a week, bled for a week, nothing for a week, and I'm currently bleeding for the third time this month. Has anyone else experienced anything like this or have any ideas as to what could be going on? Any advice as to what to do? Thanks in advance guys!