I bruise easily... Very easily. Is this normal? Is there something wrong?

any given time I usually have a handful of small bruises, and one to four large ones, just from everyday living... Bumping something or whatever. Is this not normal?

I've never really questioned it and assumed doctors were being over protective and vigilant by always asking, but my boyfriend tells me it's not normal. My mother even asked if he was beating me because of a light face bruise! My boyfriend also found a handprint bruise that must have happened from our sex, which isn't rough at all!

Do I just have thin blood or something? Are normal people not like this?