I'm just not sure....

My so and I have been ttc for about 6 months now but have had some trouble because I am very irregular. Last month I finally got a period. We had sex on my highest ovulation day. It's been about a month and I haven't gotten a period at all this month....I've had some signs and other times I think I'm going crazy....should I test.... Or just let it go because I'm so irregular??? Help!!!!