Hi marissa, you are suffering from urinary tract infection (UTI) which has led to cystitis due to which you are having this cramp kind of pain during and at the end of urination. The blood in urine is also probably due to the same. The treatment with antibiiotics are required but it is also essential to remove any cause that might be causing you repeated UTI ,like trauma during coitus, decreased water intake, unclean underwear or suboptimal personal hygiene,besides some surgical causes like strictures inthe urethra, or stones, or any kidney infection etc, these are only to enumerate a few. Also get your blood sugers tested for diabetes as it can also lead to repeated uti. Whenever there is infection see to it that cultures and then senstivity of the organism is done before emperically starting on an antibiotic and this should be taken for a prescribed period of time and not stopped abruptly if symptoms of UTI subsides, other wise one developes resistence to those antibiotics and then they need to use higher and stronger antibiotics for treatment of the same organisms. Address this problem in a detailed manner with the help of your urologist or general physician and do not overlook it as in the long run it may lead to serious kidney problems. Here are some simple measures you can take 1.drink plenty of water 2.pass urine immediately before and after coitus. 3.wear clean and preferably sundried underwears everyday 4.Keep your private parts dry and clean. 5.change your brand of sanitary napkins. hope these help, remember these are not the treatment but just preventive measures take care!