Mazi

Q: When checking for mazi if I check on my underwear and on top of the private part for mazi or traces of it and find nothing, but when squeezing the private part then only seeing mazi come out after squeezing, is the wudhu broken from before? Or only when  mazi actually flows out after squeezing? No traces could be seen on the private part head or the undergarment. So will wudhu be broken if mazi is there(inside) but didn't flow out?

Not fasting due to an Ulcer

Q: I have an ulcer and what happens is that if I do not eat than I get sever pains which is really bad times. The doctor advised me to eat quite often and not let my tummy go empty. I find it hard to disobey the command of Allah Ta'ala and I love fasting so much! Can I just carry on fasting?