I don't know if I'm ovulating....

I don't think I'm ovulating... 😳 I've been using the kit but the lines are always so faint. Plus my cycles could be 29 days one months, then 34 day and then 48. It's so hard to keep track. I've also been taking prenatals and trying to dtd every other day so we don't miss our window. But it's been 7 months and I really thought this last time was my month. If you see a fertility doctor at won't point did you let your doctor know these concerns. I have a son, but he was a surprise. We had only been together 3 years so we weren't actively trying but we also weren't doing anything to prevent it. So this is my first time actively trying.