loomi,
in my 22nd week, i also had a very serious constipation, so serious that bladder was also blocked ! i was hospitalised for 2 days and on urine catherer. doc prescribed Lactoluse and says this is safe to be taken every day, no side effect. But I didn't like it coz' it's very sweet.
Nowsadays, i make sure i drink at least 8 glasses of water. first thing in the morning, i will take 1 glass of plain water, right at the moment I wake up. after shower, i will have 1 glass of honey. somehow, these seems so help. i had not taken lactoluse for some times, and bowel seems alright. u might want to try.