Looking for some advice

So this month we decided not to try OPKs. I took 2 on random cycle days just to see what they would say, both negative. Jan of 2016 i quit taking birth control because it was causing periods every 2 weeks. Not fun. Cycles started to straighten themselves out and then I had temporary custody of one of my nieces and I thought our cycles were going to sync. Instead my cycles got longer. While frustrating I got used to having a 35-40 day cycle. The last 3 months my cycles have been 24, 21, and 25 days. I'm not sure how many dpo I actually am since we didn't test this month. According to my charts I'd be aprox 11. If I was going to have a 25-ish day cycle like I have the past few months then I would be 7 days late. Took an HOT yesterday morning first thing and it was negative. No symptoms whatsoever with the exception of my breasts being a little tender and I was mildly nauseated this morning but it went away after I ate. Have any of you gone thru anything similar or have any advice for me? Thanks in advance!

*before someone tells me I need to talk to my doctor I already have and she wants to put me on clomid. Just looking for advice or other women who are in the same boat!

*TTC for 8 months but we say 7 because I got the flu one month the DAY I started ovulating and was sick through that entire week!