Pregnancy doubt. How to proceed. thq?

Hi this is shanthi from Chennai, am 35 yrs old, and my daughter is now 10 yrs old, becos of our family situation we postponed our second baby plan, now we our ok nd my daughter is asked openly that she needs one sister and am also having a breast pain before my period date, say eg. If my date is on 25th means, my breast pain starts at 15th and stops at 22nd an and and I wl get my periods on 28th. We. Consulted gynec and taken mammograms and everything is fine, and they said its becos of harmonal changes only. So my question is if I become pregnant hw this breast pain will be for 9months, hw can I tolerate, and does my age supports for second delivery, is that ok and  my first one is cesarean only, pls advise doctor how to proceed.. Thq