BLOATED AND VERY TIRED!!!!

HI, MY PERIOD CAME ON SEPT. 15 OR THE 16 OF SEPT. AND I WENT OFF ON THAT FOLLOWING MONDAY THE 22, I HAD SEX WITH MY FIANCE THE SAME DAY. NOW IN THE PAST YEARS I HAVE HAD 1 MISCARRAGE AND TWO PARTIAL EPTOPIC PREGNANCIES, I HAVE TO GO TO THE DOCTOR TO SEE IF I CAN STILL HAVE KIDS#1, BUT I TOOK A PRGNANCY TEST ON OCT. 5 AND IT WAS NEGATIVE, ACTUALLY I FORGOT WHEN THE EARLIEST YUO COULD CHECK TO SEE IF YOU ARE PREGNANT. NOW I AM VERY TIRED AND I FEEL BLOATED LIKE SOMTHING IS IN MY STOMACH. I CAN'T DESCRIBE IT BUT I HAVEN'T FELT LIKE THIS IN A LONG TIME. I FIGURE IF I'M NOT ON BY THE 20TH THEN I'LL GET BLOOD WORK DONE, BUT CAN YOU GET PREGNANT THE SAME DAY YOU COME OFF AND YOU HAVE BEEN HAVING SEX FOR TWO WEEKS STRAIGHT WITHOUT PROTECTION. WHAT IT ALL BOILS DOWN TO IS THAT I WANT TO GET PREGNANT BUT I DONT' WANT TO BE DISAPPOINTED BY ANOTHER MISCARRAGE. THANKS