But what the HECK?!);

So this is my cycle for this month. Ive never tookn bc. I normaly dont take medication pills. I dnt drink alcohal. I dont smoke tabacco. I do smoke marijuana for chronic migraines, muscle spasams in my knee, and insomnia. I cant say im the healthiest but im active(modern) drink lots of water. Regarding all that im still on the chunky side cause i love my food lol but me and my SO have been TTC and so we decided this was our month. So we did our thang on the days where you see the heart. (Let me remind you that his whole ejaculation was left inside everytime) The flower is when i ovulated and the green dots are my fertile days. Well anyway...from the 17-19 i had bleeding and cramping.(5 days before period) Bleeding was bright red w very minimal blood drops. Sometimes it would seem like blood clots had gottn in the toilet but when i whiped it was CM and blood? Well as far as the cramping, i get extreme cramps when im about to get my period. Like the day bfr i strt or the day of. Very painful..but this time around the cramping was not intense and i was cramping the three whole days. On friday 3/18 they became a little more uncomfortable and just had to lay down! And when i did i was just a big ball of tears. Lately my moods have been going crazy. Crying and being mad over everything lol my periods are very regular. 28-30 days apart but never earlier or later than that. This week is the week im suppose to start my period and i didnt, so i bought First response and took a test when i woke up this morning.  I was so sad when i got a BFN!),: i dnt understand..ive had all symptoms but morning sickness. When i eat food my body does not want i jst get a bad tummy ache and bad heart burn. My family thinks im pregnate because im only assuming that cause i feel very different and weird lol and i can smell better than my dog!! So i would be very devasted if im not pregnate. And plus my lower belly seems a little harder than usual..but i dont want to make my body think im pregnate and have all the symptoms but not have the reason why. I did convince my body a few months ago that i was pregate and came out negative. But that time we thought he ejaculated a little amount on his way out to pull out..i guess he didnt. I dont know! I just dnt understand why my period is three days late from when im usually suppose to get it and i got a negative w FRPT?