Whats going on? AF maybe?

Hey all...
I have a TMI question..

Iain is now 16months old & AF is yet to make an appearance but I have been waiting for her to show for about 4 months now. With my other 3 she returned around 12 months.
I have had an increase in CM but it hasn't changed like you would expect it to over the course of a cycle. But there is a lot (panty liner worthy) & its watery. Not EW just clear & slippery.
Now every so often I check where my cervix is at. I am so worried about getting caught out & about when AF shows LOL. Anyway I checked it the other day & noticed a hardish lump on the edge of it. Maybe a bit smaller then the size of a match head. Probably smaller really.
I checked again this morning & my cervix is feeling open & tender. Also if I press on it, its sort of uncomfortable/painful in my uterus. Like I can feel the movement in my stomach when I do it...

That all sounds weird as I type it out but Its left me wondering whats going on. Do you think I am ovulating? We DTD the other night & DH would just love it if I was to fall preg again NOT LOL. Well he wouldn't be devastated but a 5th baby is not on the cards...

Anyway what do you think?

Sounds like you are becoming fertile :) My cervix does what you have explained a few days before it gets really soft.

its funny, I love not having AF but im at that point now where I wish she would just hurry up. At least then I would know when to expect her KWIM.

Forgot to say,the CM increase has been over the last few months whihc is why I have been expecting her but she just hasn't arrived yet.