Irregular cycles...

Nikki
My last cycle was January 5th. They are so irregular. I was thinking about getting an OPK. What kind is best? I'm new here and kind of lost! LOL. When I got pregnant with my son (9 years ago) it was a suprise. Now we are having trouble conceiving baby #2. Thanks in advance ladies! I will also take any other tips y'all have! :)