Coughing up Blood

I had posted this on my first original post and noticed it was not here - so I am putting here to hopefully get some advice.

Does coughing up blood mean the end is near or could it please, by the Grace of God, be something else?
Here is my post from this morning:
Hi its me again, MomsBestFriend after a long absence from posting due to high hopes and possibly denial.

Mom went thru 16 rounds of radiation to the brain after scan proved positive for SCLC, immediatley after radiation - she started chemotherapy.

Mom had to undergo steroids before and during radiation which made her a wonderful chatterbox -

As the year progressed and she finished her 3 rounds of chemo, the doctor told her that her tumor was just about gone and she asked to please let her undergo one more round of chemo. By October/November she was feeling great, with hair growing back and volunteering etc.

She underwent her last round and subsequent xrays and scans showed nothing - that is, until last week.

She supposively has a 4cm tumor in the same lung, lower right and in the past 2 days has been coughing up some blood. I am worried as she and my father go visit doc at 10:30 this morning....so scared. I have to note that during CT scan she became ill and vomited while lying down and doc said blood in sputum probably from strain on body from getting sick. One week later she is now getting blood in sputum when she coughs and says it is not all the time. I just pray this isnt the beginning of the end as she has done soooooooo very good since her initial diagnosis last April

Mom is doign great and feels good and docs told her that her regimen of supplements and her diet helped her stay relatively healthy during and after treatments.

What i dont udnerstand is that her report last week said "most likely recurrent" and that the cancer has not spread to abdomen or other lung - if it IS cancer, why would they not have her start chemo immediatley? As it is, thye have us coming back on Feb 11 for another CT and then result on Valentines Day (nice)

Mom is strong and will continue to fight - her hair has pretty much all grown back (which she is very happy wbout) but now the worries are here all over again. We are a positive and strong family - but todays results have me worried.

Does anyone have any information they can share with me regarding blood in sputum fromc oughing and what this COULD mean?

thanks so much everyone.

Mom has taken her Maitake D and her Flax Seed Oil Pills everyday since initial diagnosis of "a shadow" as well as plenty of white & green teas, salmon and fruit/veggies. Even this morning she feels GOOD - just sooo nervous. She leaves at 10am for her 1030 appt with my father.....