Spotting AND EWCM on birth control????

Not sure where to put this?? So I’ve been on birth control for a little over a month and I’ve noticed I have EWCM and spotting... I went through

IVF

to have my son BC I didn’t ovulate, but after having him I got pregnant 4 months post partum (he’s 8 months now). I lost the baby and after I got on BC. I had one period then I have had spotting and now the EWCM. I’m just confused... sometimes I forget to take my pill... so does that make me more at risk for ovulating?

ETA: I am on the mini pill