Ive never had constipation. i cought a flu and & then got constipated?.?

i got flu like symptoms on a thursday the usual stuffy nose,chills, etc... but never got a fever just got cold sweat and chills. by saturday i noticed i wasnt taking a # 2 in the bathroom like i normally do i usually go about 3 times a day and never had any problems. so saturday i noticed i was constipated as i tryed going and nuttin came out. ive never been constipated so its pretty weird for me i went to the hospital this monday night doc gave me miralax but mind u doc never checked my stumick just figured i was just constipated i guess sense i had no fever and wasnt throwing up but i did feel like throwing up but just didnt let myself do it .i took the miralax i guess it did soften me up but not alot came out. my stumick still feels blouded i feel like i need to drop a load off but cant and either nuttin comes out or a very small amount. i took the miralax once a day tuesday and wednesday. i went to my regular doctor today witch is thursday he took some blood work to check for some crap he mentioned lol and told me to get konsyl a fiber suppliment and drink it twice a day witch i took today but i dont feel any better i havent been able to go today very little came out today.i had more come out in the two days i took the miralax so im going back to miralax 2morrow. now i dont know how long is ok to go through this constipation? today makes it 5 days of not going as normal at all and im worried that maybe its not just constipation that i have sense i have never had this only got it when i got sick recently. now i dont have a flu anymore but stuck with this constipation so im confused? at 1 point my poop smelled like when my son was growing teeth and he had very bad runs but his poop smelled weird & thats pretty much how mine smelled two days ago. today it smelled normal but again just a little bit came out. what should i do?? i feel blouded sum pressure all around the belly and bottom is this normal?? also how long should i wait if i still feel same symptoms remember its been 5 days that ive had this problem and counting. also i feel like i have to go and when i sit down i gas and takes away from the feeling of pooping and i end up not pooping. i hate this feeling so bad ive never had this. im 26 by the way lol sorry for the typo lol