I 've had nose bleeds on when I was on and it was HBP, but it seems like you would be having head aches too especially when you strain I know I did ? Its my 21 st day on clomid and I've been having some mean sides from it very jittery and dizzy like vertigo very bad and some mean headaches that don't want to go away and head pressure with a 106 pulse at rest since clomid, so it could be that your mixing something with clomid that is raising your BP.