Cd 23 no peak yet

So my last period was on the 15th January & it was quite heavy it’s my 2nd period post miscarriage in December 😥 myself & my partner have been trying again since December... so today I’m on CD23 of this cycle, today is my fourth day of flashing smiley faces on the Clearblue Digital opk’s. We have been BDing almost every night for the last 2 weeks.. I’m wondering will I see a peak read at all this month last month I had my peak read a lot earlier.. my doctor started me on metformin this cycle & so far it’s going good I’ve also been exercising a lot this cycle.. on Thursday night I had the smallest bit of brown spotting what could that be ? Also I’m so confused with my cycle :( any advice would be appreciated x

My next option is clomid next cycle