p.s. we also have a "Sexual Health" forum.
If you continue to pressure with your needyness you will cause problems in your relationship. I think it is alread. Something in your past has emotionally effected and effecting you (trauma, abandonment, lack of love & effection, etc) and you are confusing and relating sex or intimacy with what a loving relationship should be based and not soley on sex. You could also have an addiction that if not control will eventually with time destroy your relationship and you will end up right back with a new neddyness and continued problem. You really should talk with someone a counselor to get down to the real problem with you to where you are turning to sex to fill that void of abandonment or something. Also, constantly pressuring your b/f for sex even when he is sick is selfish and inconsiderate only thinking of you, so time to face what is really bothering you and there is absolutely no reason why you can't have a loving, sexual fullfilling relationship without it become overbearing and a hassle for him. Good Luck, Judy