When should I seek help?

My fiancé and I have been TTC since February when I removed my iud mirena when it was discovered it was misplaced. since they had to take it out anyway we thought we would try anyway. We are both military and unfortunately we are stationed on separate sides of the country as of late April. I try to monitor my cycles but they are so sporadic and the past few months I spot for a day or so b4 my period and stop all together and then suddenly the flood gates open. We had planned his visit around what we thought was my ovulation but instead of my cycle starting on July 9th it came July 3rd. bummer right? so he flew in on the 22nd, a whole week after projected ovulation. started the normal spotting yesterday and now the usual nothing. I'm starting to think there may be something wrong. The military won't check until a year after solid trying. I feel disappointed and incapable. When should u seek medical help? If I do in fact need to....